Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

var sc = bufio.NewScanner(os.Stdin)

func main() {
	var num int
	fmt.Scan(&num)

	for i := 0; i < num; i++ {
		sc.Scan()
		line := sc.Text()

		insertCheck(line)
	}
}

func insertCheck(line string) {
	var B, C []int

	for _, v := range strings.Split(line, " ") {
		ball, _ := strconv.Atoi(v)
		switch {
		case len(B) == 0:
			B = append(B, ball)
		case B[len(B)-1] < ball:
			B = append(B, ball)
		case B[len(B)-1] >= ball:
			switch {
			case len(C) == 0:
				C = append(C, ball)
			case C[len(C)-1] < ball:
				C = append(C, ball)
			case C[len(C)-1] >= ball:
				fmt.Println("NO")
				return
			}
		}
	}
	fmt.Println("YES")
}

C++: #include "bits/stdc++.h"
 
using namespace std;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef vector<PII> VPII;
typedef long long LL;
typedef priority_queue<int> PQ_DESC;
typedef priority_queue<int, vector<int>, greater<int>> PQ_ASC;
typedef priority_queue<PII> PQ_DESC_PII;
typedef priority_queue<PII, vector<PII>, greater<PII>> PQ_ASC_PII;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
typedef vector<VVLL> VVVLL;

#define SORT_ASC(c) sort((c).begin(), (c).end())
#define SORT_DESC(c) sort((c).begin(), (c).end(), greater<typeof((c).begin())>())
 
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define FORL(i,a,b) for(LL i=(a);i<(b);++i)
#define REPL(i,n)  FORL(i,0,n)
#define SIZE(a) int((a).size())
#define ALL(a) (a).begin(),(a).end()
 
const double EPS = 1e-10;
const double PI  = acos(-1.0);

 //debug func
template<typename T>
void vprint(vector<T> v) {
    for(auto x : v) {
        cerr << x << " ";
    }
    cerr << endl;
}
 
template<typename T>
void vvprint(vector<vector<T>> vv) {
    REP(i, SIZE(vv)) {
        REP(j, SIZE(vv[i])) {
            cerr << vv[i][j] << " ";
        }
        cerr << endl;
    }
}

template <typename Iterator>
inline bool next_combination(const Iterator first, Iterator k, const Iterator last)
{
   /* Credits: Thomas Draper */
   if ((first == last) || (first == k) || (last == k))
      return false;
   Iterator itr1 = first;
   Iterator itr2 = last;
   ++itr1;
   if (last == itr1)
      return false;
   itr1 = last;
   --itr1;
   itr1 = k;
   --itr2;
   while (first != itr1)
   {
      if (*--itr1 < *itr2)
      {
         Iterator j = k;
         while (!(*itr1 < *j)) ++j;
         iter_swap(itr1,j);
         ++itr1;
         ++j;
         itr2 = k;
         rotate(itr1,j,last);
         while (last != j)
         {
            ++j;
            ++itr2;
         }
         rotate(k,itr2,last);
         return true;
      }
   }
   rotate(first,k,last);
   return false;
}

inline double get_time_sec(void){
    return static_cast<double>(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count())/1000000000;
}

template<typename T>
T gcd(T a, T b) {
    if(a > b) swap(a, b);
    if(a == 0) return b;
    else return gcd(b%a, a);
}

template<typename T>
T lcm(T a, T b) {
    return (a / gcd(a, b)) * b;
}

template<typename T>
map<T, T> prime_list(T n) {
    map<T, T> ret;
    for(T i = 2; i*i <= n; i++) {
        if(n % i == 0) {
            ret[i] = 0;
            while(n % i == 0) {
                n /= i;
                ret[i]++;
            }
        }
    }
    if(n != 1) ret[n]++;
    return ret;
}

#define MOD 1000000007

LL mypow(LL a, LL n) {
    if(n == 1) return a % MOD;
    if(n % 2 == 1) return (a * mypow(a, n-1)) % MOD;
    LL t = mypow(a, n/2);
    return (t * t) % MOD; 
}

LL mycomb(LL n, LL k) {
    if(n == 0 || n == k) return 1;
    LL x = 1, y = 1;
    REP(i, k) {
        x = x * (n-i) % MOD;
        y = y * (i+1) % MOD;
    }
    return x * mypow(y, MOD - 2) % MOD;
}

VI par, rnk;

int root(int x) {
    if(par[x] == x) return x;
    else return par[x] = root(par[x]);
}

bool same(int x, int y) {
    x = root(x);
    y = root(y);
    return x == y;
}

void unite(int x, int y) {
    x = root(x);
    y = root(y);
    if(rnk[x] < rnk[y]) {
        par[x] = y;
    } else {
        par[y] = x;
        if(rnk[x] == rnk[y]) rnk[x]++;
    }
}

#define INF 1e8

VI a(10);

bool dfs(int idx, int b, int c) {
    // cerr << a[idx] << ", " << b << ", " << c << endl;
    if(idx == 10) return true;
    if(a[idx] > b && a[idx] > c) return dfs(idx+1, a[idx], c) || dfs(idx+1, b, a[idx]);
    else if(a[idx] > b) return dfs(idx+1, a[idx], c);
    else if(a[idx] > c) return dfs(idx+1, b, a[idx]);
    else return false;
}

int main(void) {
    int n;
    cin >> n;
    REP(hoge, n) {
        REP(i, 10) cin >> a[i];
        cout << (dfs(0, 0, 0) ? "YES" : "NO") << endl;
    }
}

C++: #include<cstdio>

int a = 0,b = 0;
int flag = 0;
int suji[11] = {0};

void saiki(int cnt);

using namespace std;
int main(void)
{
	int kaisu;
	scanf("%d",&kaisu);
	for(int i = 0;i<kaisu;i++)
	{
		for(int j = 0;j<10;j++) scanf("%d",&suji[j]);
		saiki(0);
		if(flag == 1)
		{
			printf("YES\n");
		}
		else
		{
			printf("NO\n");
		}
		flag = 0;
		a = 0;
		b = 0;
	}
	return 0;
}

void saiki(int cnt)
{
	if(cnt == 10)
	{
		flag = 1;
		return;

	}

	if(a < suji[cnt])
	{
		a = suji[cnt];
		saiki(cnt+1);
	}
	if(b < suji[cnt])
	{
		b = suji[cnt];
		saiki(cnt+1);
	}


}

C++: #include <cstdio>
#include <iostream>
#include <algorithm>

using namespace std;


const int MAX_M = 15;
int N, H[10];

double dp[2][(1 << MAX_M) + 1];

void solve() {
	int big=0, small=0;
	for (int i = 0; i < 10; i++) {
		if (big < small) swap(big, small);
		if (H[i] < small) {
			printf("NO\n");
			goto JUMP;
		}

		if (H[i] > big) big = H[i];
		else if (H[i] > small) small = H[i];

	}
	printf("YES\n");
JUMP:
}

int main() {
	cin >> N;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < 10; j++) {
			cin >> H[j];
		}
		solve();
	}

	
	return 0;
}

C++: /*AOJ 0033 ball DFS*/ 
#include<iostream>
#include<string.h>
#include<stdio.h>
using namespace std;

int ball[15],lside[15],rside[15];
int kase;

void dfs(int i,int l,int r){
	if(i> 10){
		kase = 1;
		return;
	}
	if(kase)	return;
	if(ball[i]>lside[l-1]){
		lside[l] = ball[i];
		dfs(i+1,l+1,r);
	}
	if(ball[i]>rside[r-1]){
		rside[r] = ball[i];
		dfs(i+1,l,r+1);
	}
}


int main(void){
	int n;
	scanf("%d",&n);
	while(n--){
		for(int i=1;i<=10;i++)
			scanf("%d",&ball[i]);
		kase = 0;
		dfs(1,1,1);
		if(kase)	printf("YES\n");
		else	printf("NO\n");
	}
	return 0;
}