// Slower C++ solution:
#include<iostream>

#include<algorithm>

#include<string>

#include<cstring>

#include<sstream>

#include<iomanip>

#include<limits>

#include<deque>

#include<map>

#include<list>

#include<set>

#include <unordered_set>

#include<vector>

#include<cmath>

#include<cstdio>

#include<memory>

#include<bitset>

#include <functional>

#include <queue>



using namespace std;



constexpr int MOD = 1000000007;

constexpr int INF = 1050000000;



int main() {

	int n, q; cin >> n >> q;

	string s; cin >> s;



	int a[100000 + 1];

	memset(a, 0, sizeof(a));



	for (int i = 0; i < n - 1; i++) {

		if (s[i] == 'A' && s[i + 1] == 'C') {

			a[i + 1]++;

		}

	}



	for (int i = 0; i < n - 1; i++) {

		a[i + 1] = a[i] + a[i + 1];

	}





	for (int i = 0; i < q; i++) {

		int l, r; cin >> l >> r;



		cout << a[r-1] - a[l-1] << endl;

	}

















}

// Faster C++ solution for the same problem (measured speedup: 1.3659851724213496x):
#include<iostream>

#include<algorithm>

#include<string>

#include<cstring>

#include<sstream>

#include<iomanip>

#include<limits>

#include<deque>

#include<map>

#include<list>

#include<set>

#include<unordered_set>

#include<vector>

#include<cmath>

#include<cstdio>

#include<memory>

#include<bitset>

#include<stack>

#include<functional>

#include<queue>

#include<regex>

#include<time.h>

#include<type_traits>

#include<cstdlib>

#include<utility>

#include<numeric>

#include<iterator>

#include<random>



using namespace std;

using ll = long long;

using grid = vector<vector<char>>;



/*

メモ書き

cout << setw(5) << setfill('0') << 〇〇 << endl;

は5つ右寄せで0埋め出力

*/



constexpr ll MOD = 1000000007;//良く出てくるMOD

constexpr ll INF = 1050000000;//intで使うでかい数

constexpr ll LONGINF = 1050000000000000000;//longlongで使うでかい数



struct all_init {



	//初期化のためだけの構造体

	//コンストラクタが呼ばれ、cin,cout高速化がされる

	//ついでに少数も出力できるようにしている

	all_init() {

		cout.tie(nullptr);

		cin.tie(nullptr);

		ios::sync_with_stdio(false);

		cout << fixed << setprecision(15);

	};

}ALL_INIT;

struct edge {

	//辺の重みを管理できるような構造体

	//フローで使う容量を意味するcapaも追加

	//コンストラクタによって簡単に値を入れられるようにしている

	//operatorは辺の重みでソート出来るようにしている(主に最小全域木用)



	int from, to;

	ll cost;

	ll capa;



	edge(int s, int d) : from(s), to(d) {

		cost = 0; capa = 0;

	}

	edge(int s, int d, ll w) : from(s), to(d), cost(w) { capa = 0; }

	edge(int s, int d, ll x, ll y) :from(s), to(d), cost(x), capa(y) {  }



	bool operator < (const edge& x) const {

		return cost < x.cost;

	}

};

using graph = vector<vector<edge>>;



#define CIN(vector_array_etc,n) for(int loop=0;loop<n;loop++){cin>>vector_array_etc[loop];}

#define COUT(vector_array_etc,n) for(int LOOP=0;LOOP<n;LOOP++){cout<<vector_array_etc[LOOP]<<(LOOP == n-1 ?'\n':' ');}

#define VC(Type_name) vector<Type_name>//1次元ならあまり意味ないかも

#define SORT(vector_etc) sort(vector_etc.begin(),vector_etc.end())

#define ALL(vec_etc) vec_etc.begin(),vec_etc.end()

#define VCVC(Type_name) vector<vector<Type_name>>//2次元配列定義怠過ぎ問題

#define WARSHALL vector<vector<ll>> g(n,vector<ll>(n,LONGINF))

#define endl '\n'

#define YES cout<<"YES"<<endl

#define NO cout<<"NO"<<endl

#define Yes cout<<"Yes"<<endl

#define No cout<<"No"<<endl

#define yes cout<<"yes"<<endl

#define no cout<<"no"<<endl

#define Tof(x) x ? Yes : No

#define TOF(x) x ? YES : NO

#define tof(x) x ? yes : no



template<class T>bool chmax(T &a, const T &b) {

	if (a < b) {

		a = b;

		return true;

	}

	return false;

}//aに最大値が入る

template<class T>bool chmin(T &a, const T &b) {

	if (b < a) {

		a = b;

		return true;

	}

	return false;

}//aに最小値が入る

template<typename T>istream& operator >> (istream& is, vector<T>& Vec) {

	for (T& x : Vec) { is >> x; }

	return is;

}

template<typename V, typename H>void resize(vector<V>& vec, const H head) {

	vec.resize(head);

}

template<typename V, typename H, typename ... T>void resize(vector<V>& vec, const H& head, const T ... tail) {

	vec.resize(head);

	for (auto& v : vec) { resize(v, tail...); }

}

template<ll mod> struct ModInt {

	//けんちょんさん作modをとる整数

	//名前だけ変えた

	//これがないと二項係数が動かないので注意

	//普通に計算するとmodがとれる

	long long val;

	constexpr ModInt(long long v = 0) noexcept : val(v % mod) {

		if (val < 0) v += mod;

	}

	constexpr int getmod() { return mod; }

	constexpr ModInt operator - () const noexcept {

		return val ? mod - val : 0;

	}

	constexpr ModInt operator + (const ModInt& r) const noexcept { return ModInt(*this) += r; }

	constexpr ModInt operator - (const ModInt& r) const noexcept { return ModInt(*this) -= r; }

	constexpr ModInt operator * (const ModInt& r) const noexcept { return ModInt(*this) *= r; }

	constexpr ModInt operator / (const ModInt& r) const noexcept { return ModInt(*this) /= r; }

	constexpr ModInt& operator += (const ModInt& r) noexcept {

		val += r.val;

		if (val >= mod) val -= mod;

		return *this;

	}

	constexpr ModInt& operator -= (const ModInt& r) noexcept {

		val -= r.val;

		if (val < 0) val += mod;

		return *this;

	}

	constexpr ModInt& operator *= (const ModInt& r) noexcept {

		val = val * r.val % mod;

		return *this;

	}

	constexpr ModInt& operator /= (const ModInt& r) noexcept {

		long long a = r.val, b = mod, u = 1, v = 0;

		while (b) {

			long long t = a / b;

			a -= t * b; swap(a, b);

			u -= t * v; swap(u, v);

		}

		val = val * u % mod;

		if (val < 0) val += mod;

		return *this;

	}

	constexpr bool operator == (const ModInt& r) const noexcept {

		return this->val == r.val;

	}

	constexpr bool operator != (const ModInt& r) const noexcept {

		return this->val != r.val;

	}

	friend ostream& operator << (ostream &os, const ModInt<mod>& x) noexcept {

		return os << x.val;

	}

	friend istream& operator >> (istream &is, ModInt<mod>& x) noexcept {

		return is >> x.val;

	}

	friend constexpr ModInt<mod> modpow(const ModInt<mod> &a, long long n) noexcept {

		if (n == 0) return 1;

		auto t = modpow(a, n / 2);

		t = t * t;

		if (n & 1) t = t * a;

		return t;

	}

};

template<class T> struct nCk {

	//けんちょんさん作二項係数ライブラリ

	//名前だけ変えた

	//nCk<ModInt<MOD>> c(200000);

	//↑のような感じで初期化

	vector<T> fact_, inv_, finv_;

	constexpr nCk() {}

	constexpr nCk(int n) noexcept : fact_(n, 1), inv_(n, 1), finv_(n, 1) {

		init(n);

	}

	constexpr void init(int n) noexcept {

		fact_.assign(n, 1), inv_.assign(n, 1), finv_.assign(n, 1);

		int MOD = fact_[0].getmod();

		for (int i = 2; i < n; i++) {

			fact_[i] = fact_[i - 1] * i;

			inv_[i] = -inv_[MOD%i] * (MOD / i);

			finv_[i] = finv_[i - 1] * inv_[i];

		}

	}

	constexpr T com(int n, int k) const noexcept {

		if (n < k || n < 0 || k < 0) return 0;

		return fact_[n] * finv_[k] * finv_[n - k];

	}

	constexpr T fact(int n) const noexcept {

		if (n < 0) return 0;

		return fact_[n];

	}

	constexpr T inv(int n) const noexcept {

		if (n < 0) return 0;

		return inv_[n];

	}

	constexpr T finv(int n) const noexcept {

		if (n < 0) return 0;

		return finv_[n];

	}

};



int dx[] = { 0,1,-1, 0,1,-1, 1,-1 };    //i<4:4way i<8:8way

int dy[] = { 1,0, 0,-1,1,-1,-1, 1 };



ll PowMod(ll n, ll k, ll mod) {

	//繰り返し2乗法

	//n^kをmodで求める

	ll r = 1;



	for (; k > 0; k >>= 1) {

		if (k & 1) {

			r = (r * n) % mod;

		}

		n = (n * n) % mod;

	}

	return r;

}

ll Gcd(ll a, ll b) {//最大公約数

	return b != 0 ? Gcd(b, a % b) : a;

}

ll Lcm(ll a, ll b) {//最小公倍数

	return a / Gcd(a, b) * b;

}

vector<string> Split(string s, string t) {

	//文字列を文字列で分割する

	vector<string> v;

	int p = s.find(t);

	if (p != s.npos) {

		v.push_back(s.substr(0, p));

		s = s.substr(p + t.size());

	}

	v.push_back(s);

	return v;

}

vector<int> Lis(const vector<int>& a) {

	//#define Index_of(as, x) distance(as.begin(), lower_bound(as.begin(), as.end(), x))

#define Index_of(as, x) distance(as.begin(), upper_bound(as.begin(), as.end(), x))

//upper_boundを使用すると、重複を許した最長増加部分列になる

//-1倍した値を入れれば、最長減少部分列になる

	const int n = a.size();

	vector<int> A(n, INF);

	vector<int> id(n);

	for (int i = 0; i < n; ++i) {

		id[i] = Index_of(A, a[i]);

		A[id[i]] = a[i];

	}

	int m = *max_element(id.begin(), id.end());

	vector<int> b(m + 1);

	for (int i = n - 1; i >= 0; --i)

		if (id[i] == m) b[m--] = a[i];

	return b;//最長部分列のどれか1つ

}

string ReplaceString(string s, string target, string replacestring) {

	//1: 置き換え対象

	//2: 検索対象

	//3: 置き換える内容

	string::size_type  Pos(s.find(target));



	while (Pos != string::npos) {

		s.replace(Pos, target.length(), replacestring);

		Pos = s.find(target, Pos + replacestring.length());

	}



	return s;

}

string LcsAlphabeticalMinOrder(string a, string b) {

	if (a.size() < b.size()) { swap(a, b); }



	int n = a.size(), m = b.size();



	vector<string> dp(m + 1);



	for (int i = 0; i < n; i++) {

		vector<string> to(m + 1);

		for (int j = 0; j < m; j++) {

			if (a[i] == b[j]) {

				to[j + 1] = dp[j] + a[i];

			}

			else {

				if (to[j].size() > dp[j + 1].size()) { to[j + 1] = to[j]; }

				else if (to[j].size() < dp[j + 1].size()) { to[j + 1] = dp[j + 1]; }

				else if (to[j] < dp[j + 1]) { to[j + 1] = to[j]; }

				else { to[j + 1] = dp[j + 1]; }

			}

		}

		dp.swap(to);

	}

	return dp[m];

}

string Lcs(const string &s, const string &t) {

	int dp[3001][3001];

	int n = s.size();

	int m = t.size();

	for (int i = 1; i <= n; i++) {

		for (int j = 1; j <= m; j++) {

			if (s[i - 1] == t[j - 1]) {

				dp[i][j] = dp[i - 1][j - 1] + 1;

			}

			else {

				dp[i][j] = max(dp[i - 1][j], dp[i][j - 1]);

			}

		}

	}

	string ans = "";

	int i = s.size(), j = t.size();

	while (i > 0 && j > 0) {

		if (s[i - 1] == t[j - 1]) {

			ans += s[i - 1];

			i--;

			j--;

		}

		else if (dp[i - 1][j] >= dp[i][j - 1])

			i--;

		else

			j--;

	}

	reverse(ans.begin(), ans.end());

	return ans;

}

vector<int> LcsInteger(const vector<int> &a, const vector<int> &b) {

#define index_of(as, x) distance(as.begin(), lower_bound(as.begin(), as.end(), x))

	struct node {

		int value;

		node *next;

		node(int value, node *next) : value(value), next(next) { }

	};

	const int n = a.size(), m = b.size();

	map< int, vector<int> > M;

	for (int j = m - 1; j >= 0; --j)

		M[b[j]].push_back(j);

	vector<int> xs(n + 1, INF); xs[0] = -INF;

	vector< node* > link(n + 1);

	for (int i = 0; i < n; ++i) {

		if (M.count(a[i])) {

			vector<int> ys = M[a[i]];

			for (int j = 0; j < (int)ys.size(); ++j) {

				int k = index_of(xs, ys[j]);

				xs[k] = ys[j];

				link[k] = new node(b[ys[j]], link[k - 1]);

			}

		}

	}

	vector<int> c;

	int l = index_of(xs, INF - 1) - 1;

	for (node *p = link[l]; p; p = p->next)

		c.push_back(p->value);

	reverse(c.begin(), c.end());

	return c;

}

bool IsPrime(ll n) {

	//素数かどうかを判定

	//true 素数

	if (n < 2)return false;

	for (ll i = 2; i*i <= n; i++)if (!(n%i))return false;

	return true;

}

vector<bool> Eratosthenes(int n) {

	//エラトステネスの篩

	//返り値はbool

	//return res;として、返り値の型をvector<int>とすれば、

	//素数だけを取り出せる

	vector<int> res;

	vector<bool> Prime(n + 1, true);

	Prime[0] = Prime[1] = false;

	for (int i = 2; i*i <= n; i++) {

		if (Prime[i]) {

			for (int j = 2; i*j <= n; j++) {

				Prime[i*j] = false;

			}

		}

	}

	for (int i = 2; i <= n; i++) {

		if (Prime[i]) {

			res.emplace_back(i);

		}

	}

	return Prime;

}

ll MergeCount(vector<int> &a) {

	//反転数を数える

	ll count = 0;

	int n = a.size();

	if (n > 1) {

		vector<int> b(a.begin(), a.begin() + n / 2);

		vector<int> c(a.begin() + n / 2, a.end());

		count += MergeCount(b);

		count += MergeCount(c);

		for (int i = 0, j = 0, k = 0; i < n; ++i)

			if (k == c.size())       a[i] = b[j++];

			else if (j == b.size())  a[i] = c[k++];

			else if (b[j] <= c[k])   a[i] = b[j++];

			else { a[i] = c[k++]; count += n / 2 - j; }

	}

	return count;

}

bool  WarshallFloyd(vector<vector<ll>> &c) {

	//ワーシャルフロイド法

	//全ての頂点間の最短距離を求める

	//falseの時、負の閉路検出

	int V = c.size();

	for (int i = 0; i < V; i++) {

		c[i][i] = 0;

	}



	for (int i = 0; i < V; i++) {

		for (int j = 0; j < V; j++) {

			for (int k = 0; k < V; k++) {

				if (c[j][k] > c[j][i] + c[i][k]) {

					c[j][k] = c[j][i] + c[i][k];

				}

			}

		}

	}



	for (int i = 0; i < V; i++) {

		if (c[i][i] < 0) {

			return false;

		}

	}







	return true;

}

vector<ll> Dijkstra(int i, vector<vector<edge>> graph) {

	//i:始点

	//graph:重み付きグラフ

	int n = graph.size();

	vector<ll> d(n, LONGINF);

	d[i] = 0;

	priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>> q;

	q.push(make_pair(0, i));//第一引数:コスト 第二引数:頂点

	while (!q.empty()) {

		pair<ll, int> p = q.top();

		q.pop();

		int v = p.second;

		if (d[v] < p.first) {

			continue;

		}

		for (auto x : graph[v]) {

			if (d[x.to] > d[v] + x.cost) {

				d[x.to] = d[v] + x.cost;

				q.push(make_pair(d[x.to], x.to));

			}

		}

	}

	return d;

}

bool BellmanFord(int start, int V, int E, vector<edge> Edge, vector<ll> &d) {

	//第一引数:start 始点

	//第二引数:V 頂点数

	//第三引数:E 辺の数

	//第四引数:Edge 辺の重み付きのグラフ

	//第五引数:d 各頂点への距離を入れる配列(答えが入る)

	//負の閉路検出でfalseが返り値

	resize(d, V);

	fill(d.begin(), d.end(), LONGINF);

	d[start] = 0;

	vector<bool> t(V, false);



	for (int i = 0; i < V - 1; i++) {

		for (int j = 0; j < E; j++) {

			edge e = Edge[j];

			if (d[e.from] == LONGINF) { continue; }

			if (d[e.to] > d[e.from] + e.cost) {

				d[e.to] = d[e.from] + e.cost;

			}

		}

	}



	for (int i = 0; i < V; i++) {

		for (int j = 0; j < E; j++) {

			edge e = Edge[j];

			if (d[e.from] == LONGINF) { continue; }

			if (d[e.to] > d[e.from] + e.cost) {

				d[e.to] = d[e.from] + e.cost;

				t[e.to] = true;

				/*

				if (i == V - 1) {//どこかに閉路があることを感知する

					return false;

				}

				*/

			}

			if (t[e.from]) {

				t[e.to] = true;

			}

		}

	}



	if (t[V - 1]) {

		//V-1は頂点番号n-1で、始点からn-1までに負の閉路を検出したい場合には、

		//コメントアウトを解除すること。

		return false;

	}



	return true;

}

bool TopologicalSort(const vector<vector<edge>> &g, vector<int> &ans) {

	//トポロジカルソート

	//trueが帰る時、トポロジカルソートが成功し、その結果がansに渡される

	//falseはトポロジカルソートの失敗

	int n = g.size(), k = 0;

	vector<int> ord(n), in(n);

	for (auto &es : g) {

		for (auto &e : es) {

			in[e.to]++;

		}

	}

	queue<int> q;

	for (int i = 0; i < n; ++i) {

		if (in[i] == 0) q.push(i);

	}

	while (!q.empty()) {

		int v = q.front();

		q.pop();

		ord[k++] = v;

		for (auto &e : g[v]) {

			if (--in[e.to] == 0) q.push(e.to);

		}

	}

	ans = ord;

	if (*max_element(in.begin(), in.end()) == 0) { return true; }

	return false;

}

vector<int> ArticulationNode(const vector<vector<edge>>& g) {

	//グラフの関節点を列挙する

	//最後の2行で、erace uniqueをしない場合は、その分割によって何個のグラフに分かれるかを判定できる(要チェック)。

	int n = g.size(), idx;

	vector<int> low(n), ord(n), art;

	function<void(int)> DFS = [&](int v) {

		low[v] = ord[v] = ++idx;

		for (auto& e : g[v]) {

			int w = e.to;

			if (ord[w] == 0) {

				DFS(w);

				low[v] = min(low[v], low[w]);

				if ((ord[v] == 1 && ord[w] != 2) || (ord[v] != 1 && low[w] >= ord[v])) {

					art.push_back(v);

				}

			}

			else {

				low[v] = min(low[v], ord[w]);

			}

		}

	};

	for (int u = 0; u < n; u++) {

		if (ord[u] == 0) {

			idx = 0;

			DFS(u);

		}

	}



	sort(art.begin(), art.end());//与えられた関節点をソート

	art.erase(unique(art.begin(), art.end()), art.end());//同じ関節点が複数存在することがある,



	return art;

}

vector<vector<edge>> ToRootTree(const vector<vector<edge>> &g, int r) {

	//根付き木へ変換する。

	//動作未確認。

	int n = g.size();

	vector<vector<edge>> G(n);

	vector<int> ord(n, -1);



	queue<int> q;



	q.push(r);

	int k = 0;



	while (q.size()) {

		int u = q.front(); q.pop();



		for (auto &e : g[u]) {

			int v = e.to;

			if (ord[v] == -1) {

				ord[v] = k; k++;

				q.push(v);

				G[u].emplace_back(e);

			}

		}

	}



	return G;

}

edge TreeDiameter(const vector<vector<edge>> &g) {

	//重み付きグラフ(木)を受け取り、その木の直径を求める

	//返り値はfrom,to,costを持った構造体



	int start = 0;//どの始点から始めても良いので、0から始める



	static const auto bfs = [](const vector<vector<edge>> &g, int s, queue<int> &q, vector<ll> &dist) {

		while (!q.empty()) { q.pop(); }

		q.push(s);

		int n = g.size();

		dist.assign(n, LONGINF);

		dist[s] = 0;

		while (q.size()) {

			int u = q.front();

			q.pop();

			for (auto &e : g[u]) {

				int v = e.to;

				if (dist[v] == LONGINF) {

					dist[v] = dist[u] + e.cost;

					q.push(v);

				}

			}

		}

		return dist;

	};

	vector<ll> dist;

	queue<int> q;

	bfs(g, start, q, dist);

	int n = g.size(), u = -1, v = -1;

	for (int i = 0; i < n; i++)

		if (dist[i] != LONGINF && (u == -1 || dist[i] > dist[u])) u = i;

	bfs(g, u, q, dist);

	for (int i = 0; i < n; i++)

		if (dist[i] != LONGINF && (v == -1 || dist[i] > dist[v])) v = i;

	ll d = dist[v];

	if (u > v) swap(u, v);//念のため辞書順

	return edge(u, v, d);

}

void add_edge(vector<vector<edge>> &g, int a, int b, ll cost, ll cap) {

	//graph(vector<vector<edge>>)に対して無向辺として辺を貼る関数

	//graph以外には当然使えないので注意

	g[a].emplace_back(a, b, cost, cap);

	g[b].emplace_back(b, a, cost, cap);

}

pair<vector<int>, vector<edge>> bridge(const vector<vector<edge>>& g) {

	//グラフの橋となる辺を列挙する

	//戻り値のfirst:二重辺連結成分分解の番号となる

	//戻り値のsecond:橋となる辺を列挙したもの

	const int n = g.size();

	int idx = 0, s = 0, t = 0, k = 0;

	vector<int> ord(n, -1), onS(n), stk(n), roots(n), cmp(n);

	vector<edge> brdg;

	function<void(int, int)> dfs = [&](int v, int u) {

		ord[v] = idx++;

		stk[s++] = v;

		onS[v] = true;

		roots[t++] = v;

		for (auto& e : g[v]) {

			int w = e.to;

			if (ord[w] == -1) { dfs(w, v); }

			else if (u != w && onS[w]) {

				while (ord[roots[t - 1]] > ord[w]) { --t; }

			}

		}

		if (v == roots[t - 1]) {

			brdg.emplace_back(u, v, 0);

			while (1) {

				int w = stk[--s];

				onS[w] = false;

				cmp[w] = k;

				if (v == w) break;

			}

			--t;

			++k;

		}

	};

	for (int u = 0; u < n; u++) {

		if (ord[u] == -1) {

			dfs(u, n);

			brdg.pop_back();

		}

	}

	return make_pair(cmp, brdg);

}



class UnionFind {

	//satanicさん作 UnionFind

	//追加機能:forest_num

	//forestは、全体に含まれる木の数を表す

private:

	std::vector<int> parent;

	std::vector<int> height;

	std::vector<int> m_size;

	int forest_num;

public:

	UnionFind(int size_) : parent(size_), height(size_, 0), m_size(size_, 1) {

		forest_num = size_;

		for (int i = 0; i < size_; ++i) parent[i] = i;

	}

	void init(int size_) {

		parent.resize(size_);

		height.resize(size_, 0);

		m_size.resize(size_, 1);

		forest_num = size_;

		for (int i = 0; i < size_; ++i) parent[i] = i;

	}

	int find(int x) {

		if (parent[x] == x) return x;

		return parent[x] = find(parent[x]);

	}

	void unite(int x, int y) {

		x = find(x);

		y = find(y);

		if (x == y) return;

		int t = size(x) + size(y);

		m_size[x] = m_size[y] = t;

		if (height[x] < height[y]) parent[x] = y;

		else parent[y] = x;

		if (height[x] == height[y]) ++height[x];

		forest_num--;

	}

	bool same(int x, int y) {

		return find(x) == find(y);

	}

	int size(int x) {

		if (parent[x] == x) return m_size[x];

		return size(parent[x] = find(parent[x]));

	}

	int forest() {

		return forest_num;

	}

};

class Dinic {

	//最大流を求める

#define FLOW int

private:

	int n, s, t;

	vector<int> level, prog, que;

	vector<vector<FLOW>> cap, flow;

	vector<vector<int>> g;

	FLOW inf;

public:

	Dinic(const vector<vector<edge>> &graph) :

		n(graph.size()),

		cap(n, vector<FLOW>(n)),

		flow(n, vector<FLOW>(n)),

		g(n, vector<int>()),

		inf(INF) {

		for (int i = 0; i < n; i++) {

			for (auto &e : graph[i]) {

				int u = e.from, v = e.to;

				ll c = e.capa;

				cap[u][v] += c;

				cap[v][u] += c;

				flow[v][u] += c;

				g[u].push_back(v);

				g[v].push_back(u);

			}

		}

	}

	inline FLOW residue(int u, int v) { return cap[u][v] - flow[u][v]; }

	FLOW solve(int s_, int t_) {

		this->t = t_, this->s = s_;

		que.resize(n + 1);

		FLOW res = 0;

		while (levelize()) {

			prog.assign(n, 0);

			res += augment(s, inf);

		}

		return res;

	}

	bool levelize() {

		int l = 0, r = 0;

		level.assign(n, -1);

		level[s] = 0;

		que[r++] = s;

		while (l != r) {

			int v = que[l++];

			if (v == t) break;

			for (const int &d : g[v])

				if (level[d] == -1 && residue(v, d) != 0) {

					level[d] = level[v] + 1;

					que[r++] = d;

				}

		}

		return level[t] != -1;

	}

	FLOW augment(int v, FLOW lim) {

		FLOW res = 0;

		if (v == t) return lim;

		for (int &i = prog[v]; i < (int)g[v].size(); i++) {

			const int &d = g[v][i];

			if (residue(v, d) == 0 || level[v] >= level[d]) continue;

			const FLOW aug = augment(d, min(lim, residue(v, d)));

			flow[v][d] += aug;

			flow[d][v] -= aug;

			res += aug;

			lim -= aug;

			if (lim == 0) break;

		}

		return res;

	}

};

class MinimumCostFlow {

private:



	using Flow = ll;

	using Cost = ll;

	struct Edge {

		int d;

		Flow c, f;

		Cost w;

		int r, is_r;

		Edge(int d_, Flow c_, Flow f_, Cost w_, int r_, bool is_r_)

			: d(d_), c(c_), f(f_), w(w_), r(r_), is_r(is_r_) {}

	};

	int n;

	vector<vector<Edge>> g;



public:



	MinimumCostFlow(int n_) : n(n_), g(vector<vector<Edge>>(n_)) {}



	void add_edge(int src, int dst, Flow cap, Cost cost) {  // 有向辺

		int rsrc = g[dst].size();

		int rdst = g[src].size();

		g[src].emplace_back(dst, cap, 0, cost, rsrc, false);

		g[dst].emplace_back(src, cap, cap, -cost, rdst, true);

	}



	Cost solve(int s, int t, Flow f) {

		Cost res = 0;



		vector<Cost> h(n + 10), dist(n);

		vector<int> prevv(n + 10), preve(n + 10);



		using pcv = pair<Cost, int>;

		priority_queue<pcv, vector<pcv>, greater<pcv> > q;

		fill(h.begin(), h.end(), 0);

		while (f > 0) {

			fill(dist.begin(), dist.end(), LONGINF);

			dist[s] = 0;

			q.emplace(0, s);

			while (q.size()) {

				Cost cd;

				int v;

				tie(cd, v) = q.top();

				q.pop();

				if (dist[v] < cd) continue;

				for (int i = 0; i < (int)(g[v].size()); ++i) {

					Edge &e = g[v][i];

					if (residue(e) == 0) continue;

					if (dist[e.d] + h[e.d] > cd + h[v] + e.w) {

						dist[e.d] = dist[v] + e.w + h[v] - h[e.d];

						prevv[e.d] = v;

						preve[e.d] = i;

						q.emplace(dist[e.d], e.d);

					}

				}

			}



			if (dist[t] == LONGINF) return -1;  // 経路が見つからなかった



			// s-t 間を最短路に沿って目一杯流す

			for (int i = 0; i < n; ++i) h[i] += dist[i];

			Flow d = f;

			for (int v = t; v != s; v = prevv[v]) {

				chmin(d, residue(g[prevv[v]][preve[v]]));

			}

			f -= d;

			res += d * h[t];

			for (int v = t; v != s; v = prevv[v]) {

				Edge &e = g[prevv[v]][preve[v]];

				e.f += d;

				g[v][e.r].f -= d;

			}

		}

		return res;

	}



	Flow residue(const Edge &e) { return e.c - e.f; }



	// 流量を表示

	void show() {

		for (int i = 0; i < n; ++i) {

			for (int j = 0; j < (int)(g[i].size()); ++j) {

				Edge &e = g[i][j];

				if (e.is_r) continue;

				cout << i << "->" << e.d << "(flow:" << e.f << ")" << endl;

			}

		}

	}

};

class BipartiteMatching {

private:

	int V;

	vector<int> match;

	vector<bool> used;

	vector<vector<int>> g;

	vector<pair<int, int>> match_pair;



	bool dfs(int v) {

		used[v] = true;

		for (int i = 0; i < (int)g[v].size(); i++) {

			int u = g[v][i];

			int w = match[u];

			if (w < 0 || !used[w] && dfs(w)) {

				match[v] = u;

				match[u] = v;

				match_pair.emplace_back(make_pair(u, v));

				return true;

			}

		}

		return false;

	}



public:

	BipartiteMatching(int n) {

		V = n;

		resize(match, n);

		resize(used, n);

		resize(g, n);

	}



	void add_edge(int u, int v) {

		g[u].emplace_back(v);

		g[v].emplace_back(u);

	}



	int MatchingSolve() {

		int res = 0;

		fill(match.begin(), match.end(), -1);



		for (int v = 0; v < V; v++) {

			if (match[v] < 0) {

				fill(used.begin(), used.end(), false);

				if (dfs(v)) {

					res++;

				}

			}

		}

		return res;

	}



	vector<pair<int, int>> get_pair() {

		for (auto x : match_pair) {

			cout << x.first << "  " << x.second << endl;

		}

		return match_pair;

	}



};

class Lca {

private:

	int n;

	int log2_n;

	vector<vector<int>> parent;

	vector<int> depth;



	void dfs(const vector<vector<edge>> &g, int v, int p, int d) {

		parent[0][v] = p;

		depth[v] = d;

		for (auto &e : g[v]) {

			if (e.to != p) { dfs(g, e.to, v, d + 1); }

		}

	}



public:



	Lca(const vector<vector<edge>> &g, int root) {

		n = g.size();

		log2_n = (int)log2(n) + 1;

		resize(parent, log2_n, n);

		resize(depth, n);



		dfs(g, root, -1, 0);



		for (int k = 0; k + 1 < log2_n; k++) {

			for (int v = 0; v < (int)g.size(); v++) {

				if (parent[k][v] < 0) {

					parent[k + 1][v] = -1;

				}

				else {

					parent[k + 1][v] = parent[k][parent[k][v]];

				}

			}

		}



	}



	int get_lca(int u, int v) {

		if (depth[u] > depth[v]) { swap(u, v); }//u≦v



		for (int k = 0; k < log2_n; k++) {

			if ((depth[v] - depth[u]) >> k & 1) {

				v = parent[k][v];

			}

		}

		if (u == v) { return u; }



		for (int k = log2_n - 1; k >= 0; k--) {

			if (parent[k][u] != parent[k][v]) {

				u = parent[k][u];

				v = parent[k][v];

			}

		}

		return parent[0][u];

	}



	int get_depth(int v) {

		return depth[v];

	}

};

class DAG {

	//有向グラフをゴニョゴニョするクラス

	//機能:longest_path 有向パスの最長経路(含まれる辺の数)を求める

private:

	int n;

	vector<vector<edge>> g;

	vector<int> visited;

	vector<int> dp;

	vector<int> topological;



	int dfs(int s) {

		if ((int)g[s].size() == 0) {

			return 1;

		}

		if (dp[s] > 0) { return dp[s]; }



		int mx = 1;

		for (auto j : g[s]) {

			if (visited[j.to] == 0) {

				visited[j.to] = 1;

				int l = 0;

				l = dfs(j.to);

				chmax(mx, l);

			}

			else {

				chmax(mx, dp[j.to]);

			}

		}

		return dp[s] = mx + 1;

	}

public:

	DAG(const vector<vector<edge>> &f) {

		g = f;

		n = f.size();

		resize(visited, n + 1);

		fill(visited.begin(), visited.end(), 0);

		resize(dp, n + 1);

		fill(dp.begin(), dp.end(), -1);

		resize(topological, n);

	}

	DAG(int x) {

		n = x;

		resize(g, n);

		resize(visited, n + 1);

		fill(visited.begin(), visited.end(), 0);

		resize(dp, n + 1);

		fill(dp.begin(), dp.end(), -1);

	}



	void add_edge(int a, int b) {

		g[a].emplace_back(a, b);

	}

	void add_edge(int a, int b, ll c) {

		g[a].emplace_back(a, b, c);

	}

	void add_edge(int a, int b, ll c, ll d) {

		g[a].emplace_back(a, b, c, d);

	}



	int longest_path() {

		int mx = -1;

		for (int i = 0; i < n; i++) {

			int h = 0;

			if (visited[i] == 0) {

				h = dfs(i);

				chmax(mx, h);

			}

		}

		return mx - 1;

	}



	bool TopologicalSort() {

		//trueが帰る時、トポロジカルソートが成功

		//falseはトポロジカルソートの失敗

		int k = 0;

		vector<int> ord(n), in(n);

		for (auto &es : g) {

			for (auto &e : es) {

				in[e.to]++;

			}

		}

		queue<int> q;

		for (int i = 0; i < n; ++i) {

			if (in[i] == 0) q.push(i);

		}

		while (!q.empty()) {

			int v = q.front();

			q.pop();

			ord[k++] = v;

			for (auto &e : g[v]) {

				if (--in[e.to] == 0) { q.push(e.to); }

			}

		}

		topological = ord;

		if (*max_element(in.begin(), in.end()) == 0) { return true; }

		return false;

	}



};

class RangeMinimumUpdateQuerySegmentTree {

	//区間最小値を求めることが出来るセグメント木

	//query:指定した半開区間においての最小値を求める

	//update:指定した半開区間の値を変更する

	//RangeUpdateQueryも兼ねることが出来る(1つの要素の最小値はその要素のみ)

private:

	int n;

	ll inf = (1LL << 31) - 1;//2^31-1

	vector<ll> dat, lazy;



	void eval(int len, int k) {

		if (lazy[k] == inf) return;

		if (k * 2 + 1 < n * 2 - 1) {

			lazy[2 * k + 1] = lazy[k];

			lazy[2 * k + 2] = lazy[k];

		}

		dat[k] = lazy[k];

		lazy[k] = inf;

	}

public:

	RangeMinimumUpdateQuerySegmentTree() {}

	RangeMinimumUpdateQuerySegmentTree(int n_) {

		n = 1; while (n < n_) n *= 2;

		dat.assign(n * 2, inf);

		lazy.assign(n * 2, inf);

	}



	// [a, b)

	ll update(int a, int b, ll x, int k, int l, int r) {

		eval(r - l, k);

		if (b <= l || r <= a) return dat[k];

		if (a <= l && r <= b) {

			lazy[k] = x;

			return lazy[k];

		}

		return dat[k] = min(update(a, b, x, 2 * k + 1, l, (l + r) / 2), update(a, b, x, 2 * k + 2, (l + r) / 2, r));

	}

	ll update(int a, int b, ll x) { return update(a, b, x, 0, 0, n); }



	// [a, b)

	ll query(int a, int b, int k, int l, int r) {

		eval(r - l, k);

		if (b <= l || r <= a) return inf;

		if (a <= l && r <= b) return dat[k];

		ll vl = query(a, b, 2 * k + 1, l, (l + r) / 2);

		ll vr = query(a, b, 2 * k + 2, (l + r) / 2, r);

		return min(vl, vr);

	}

	ll query(int a, int b) { return query(a, b, 0, 0, n); }

};

class RangeSumQuerySegmentTree {

	//区間和を求めることが出来るセグメント木

	//update:指定した要素に加算

	//query:指定した半開区間の合計を返す

	//0-indexed

	//半開区間

private:

	struct Node {

		Node *left, *right;

		ll v;



		Node() : left(nullptr), right(nullptr), v(0) {}

	};

	Node *root;

	ll n, n0;

	ll query(ll a, ll b, Node *n, ll l, ll r) {

		if (a <= l && r <= b) {

			return n->v;

		}

		if (r <= a || b <= l) {

			return 0;

		}



		ll lv = n->left ? query(a, b, n->left, l, (l + r) >> 1) : 0;

		ll rv = n->right ? query(a, b, n->right, (l + r) >> 1, r) : 0;

		return (lv + rv) % MOD;

	}

public:

	RangeSumQuerySegmentTree(ll n) : n(n) {

		n0 = 1;

		while (n0 < n) n0 <<= 1;

		root = new Node();

	}

	~RangeSumQuerySegmentTree() {

		delete root; root = nullptr;

	}



	void update(ll k, ll x) {

		Node *n = root;

		ll l = 0, r = n0;

		n->v = (n->v + x) % MOD;

		while (r - l > 1) {

			ll m = (l + r) >> 1;

			if (k < m) {

				if (!n->left) n->left = new Node();

				n = n->left;



				r = m;

			}

			else {

				if (!n->right) n->right = new Node();

				n = n->right;



				l = m;

			}

			n->v = (n->v + x) % MOD;

		}

	}



	ll query(ll a, ll b) {

		return query(a, b, root, 0, n0);

	}



	ll lquery(ll b) {

		return query(0, b, root, 0, n0);

	}



	ll rquery(ll a) {

		return query(a, n0, root, 0, n0);

	}

};

class KDimensionalTree {

	//2Dの点がある区間内にあるかどうかを判定し、その点を列挙する

	//makeKDTreeで前計算

	//findが実際に探す部分

public:

	struct Node {

		int location;

		int p, l, r;

		Node() {}

	};

	struct Point {

		int id, x, y;

		Point() {}

		Point(int i, int a, int b) {

			id = i;

			x = a;

			y = b;

		}

		bool operator<(const Point &p)const {

			return id < p.id;

		}

		void print() {

			cout << id << endl;

		}

	};

	static const ll NIL = -1;

	static bool lessX(const Point &p1, const Point &p2) { return p1.x < p2.x; }

	static bool lessY(const Point &p1, const Point &p2) { return p1.y < p2.y; }



	int N;

	vector<Point> P;

	vector<Node> T;

	int np;



	KDimensionalTree() {}

	KDimensionalTree(int N) { init(N); }



	void init(int n) {

		N = n;

		P.clear();

		T.clear();

		resize(P, N);

		resize(T, N);

		np = 0;

	}



	int makeKDTree(int l, int r, int depth) {

		if (l >= r) { return NIL; }

		int mid = (l + r) / 2;

		int t = np++;

		if (depth & 1) {

			sort(P.begin() + l, P.begin() + r, lessY);

		}

		else {

			sort(P.begin() + l, P.begin() + r, lessX);

		}

		T[t].location = mid;

		T[t].l = makeKDTree(l, mid, depth + 1);

		T[t].r = makeKDTree(mid + 1, r, depth + 1);

		return t;

	}

	void find(int v, int sx, int tx, int sy, int ty, int depth, vector<Point> &ans) {

		int x = P[T[v].location].x;

		int y = P[T[v].location].y;

		if (sx <= x && x <= tx && sy <= y && y <= ty) {

			ans.push_back(P[T[v].location]);

		}

		if (depth % 2 == 0) {

			if (T[v].l != NIL) {

				if (sx <= x) find(T[v].l, sx, tx, sy, ty, depth + 1, ans);

			}

			if (T[v].r != NIL) {

				if (x <= tx) find(T[v].r, sx, tx, sy, ty, depth + 1, ans);

			}

		}

		else {

			if (T[v].l != NIL) {

				if (sy <= y) find(T[v].l, sx, tx, sy, ty, depth + 1, ans);

			}

			if (T[v].r != NIL) {

				if (y <= ty) find(T[v].r, sx, tx, sy, ty, depth + 1, ans);

			}

		}

	}

	void add_point(int i, int x, int y) {

		P[i].id = i;

		P[i].x = x;

		P[i].y = y;

		T[i].l = T[i].r = T[i].p = NIL;

	}

};

class RangeAddQuerySegmentTree {

	//区間に足し算をする機能と、ある要素を参照する機能があるセグメント木

private:

	int n;

	vector<ll> data;

public:

	RangeAddQuerySegmentTree() {}

	RangeAddQuerySegmentTree(int N) {

		n = N;

		resize(data, n + 1);

		fill(data.begin(), data.end(), 0);

	}



	void add(int i, ll x) {

		while (i) {

			data[i] += x;

			i -= (i&-i);

		}

	}

	void add(int i, int j, ll x) {

		add(j, x);

		add(i - 1, -x);

	}



	ll get(int i) {

		ll res = 0;

		while (i <= n) {

			res += data[i];

			i += (i&-i);

		}

		return res;

	}

};

class RangeSumAddQuerySegmentTree {

	//update:ある区間に対して足し算を行う機能

	//query:ある区間に対して合計値を求める機能

private:

	vector<ll> bit0, bit1;

	int n;



	ll sum(const vector<ll> &b, int i) {

		ll s = 0;

		while (i > 0) {

			s += b[i];

			i -= (i&-i);

		}

		return s;

	}



	void add(vector<ll> &b, int i, ll v) {

		while (i <= n) {

			b[i] += v;

			i += (i&-i);

		}

	}

public:

	RangeSumAddQuerySegmentTree() {}

	RangeSumAddQuerySegmentTree(int N) {

		n = N;

		resize(bit0, n + 1);

		resize(bit1, n + 1);

		fill(bit0.begin(), bit0.end(), 0);

		fill(bit1.begin(), bit1.end(), 0);

	}



	void update(int l, int r, ll x) {

		add(bit0, l, -x * (l - 1));

		add(bit1, l, x);

		add(bit0, r + 1, x*r);

		add(bit1, r + 1, -x);

	}



	ll query(int l, int r) {

		ll res = 0;

		res += sum(bit0, r) + sum(bit1, r)*r;

		res -= sum(bit0, l - 1) + sum(bit1, l - 1)*(l - 1);

		return res;

	}

};



vector<ll> CumulativeSum(const vector<ll> &v) {

	int n = v.size();

	vector<ll> a(n, 0);

	a[0] = v[0];

	for (int i = 1; i < n; i++) {

		a[i] += a[i - 1] + v[i];

	}

	return a;

}





int main() {

	int n, q; cin >> n >> q;

	string s; cin >> s;



	vector<int> a(n, 0);



	for (int i = 0; i < n - 1; i++) {

		if (s[i] == 'A'&&s[i + 1] == 'C') {

			a[i + 1] += 1;

		}

	}



	for (int i = 1; i < n; i++) {

		a[i] += a[i - 1];

	}



	for (int i = 0; i < q; i++) {

		int l, r; cin >> l >> r;

		l--, r--;

		cout << a[r] - a[l] << endl;

	}

	



	return 0;

}