Language: C++

/*
このコード、と～おれ!
Be accepted!
∧＿∧　
（｡･ω･｡)つ━☆・*。
⊂　　 ノ 　　　・゜+.
　しーＪ　　　°。+ *´¨)
 　　　　　　　　　.· ´¸.·*´¨) ¸.·*¨)
		  　　　　　　　　　　(¸.·´ (¸.·'* ☆
*/

#include <cstdio>
#include <algorithm>
#include <string>
#include <cmath>
#include <cstring>
#include <vector>
#include <numeric>
#include <iostream>
#include <random>
#include <map>
#include <unordered_map>
#include <queue>
#include <regex>
#include <functional>
#include <complex>
#include <list>
#include <cassert>
#include <iomanip>
#include <set>
#include <stack>
#include <bitset>

////多倍長整数, cpp_intで宣言
//#include <boost/multiprecision/cpp_int.hpp>
//using namespace boost::multiprecision;

//#pragma GCC target ("avx2")
//#pragma GCC optimization ("Ofast")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define repeat(i, n, m) for(int i = n; i < (m); ++i)
#define rep(i, n) for(int i = 0; i < (n); ++i)
#define printynl(a) printf(a ? "yes\n" : "no\n")
#define printyn(a) printf(a ? "Yes\n" : "No\n")
#define printYN(a) printf(a ? "YES\n" : "NO\n")
#define printim(a) printf(a ? "possible\n" : "imposible\n")
#define printdb(a) printf("%.50lf\n", a) //少数出力
#define printLdb(a) printf("%.50Lf\n", a) //少数出力
#define printdbd(a) printf("%.16lf\n", a) //少数出力(桁少なめ)
#define prints(s) printf("%s\n", s.c_str()) //string出力
#define all(x) (x).begin(), (x).end()
#define deg_to_rad(deg) (((deg)/360.0L)*2.0L*PI)
#define rad_to_deg(rad) (((rad)/2.0L/PI)*360.0L)
#define Please return
#define AC 0
#define manhattan_dist(a, b, c, d) (abs(a - c) + abs(b - d)) /*(a, b) から (c, d) のマンハッタン距離 */
#define inf numeric_limits<double>::infinity();
#define linf numeric_limits<long double>::infinity()

using ll = long long;
using ull = unsigned long long;

constexpr int INF = 1073741823;
constexpr int MINF = -1073741823;
constexpr ll LINF = ll(4661686018427387903);
constexpr ll MOD = 1e9 + 7;
constexpr ll mod = 998244353;
constexpr long double eps = 1e-6;
const long double PI = acos(-1.0L);

using namespace std;

void scans(string& str) {
	char c;
	str = "";
	scanf("%c", &c);
	if (c == '\n')scanf("%c", &c);
	while (c != '\n' && c != -1 && c != ' ') {
		str += c;
		scanf("%c", &c);
	}
}

void scanc(char& str) {
	char c;
	scanf("%c", &c);
	if (c == -1)return;
	while (c == '\n') {
		scanf("%c", &c);
	}
	str = c;
}


double acot(double x) {
	return PI / 2 - atan(x);
}

ll LSB(ll n) { return (n & (-n)); }

template<typename T>
inline T chmin(T& a, const T& b) {
	if (a > b)a = b;
	return a;
}

template<typename T>
inline T chmax(T& a, const T& b) {
	if (a < b)a = b;
	return a;
}

/*-----------------------------------------ここからコード-----------------------------------------*/

﻿/*
* @title template(graph)
* @docs kyopro/docs/graph_template.md
*/

template<typename T>
struct edge {
	T cost;
	int from, to;

	edge(int from, int to) : from(from), to(to), cost(T(1)) {}
	edge(int from, int to, T cost) : from(from), to(to), cost(cost) {}
};

template<typename T = int>
struct graph {

	int n;
	bool directed, weighted;

	vector<vector<edge<T>>> g;

	graph(int n, bool directed, bool weighted) : g(n), n(n), directed(directed), weighted(weighted) {}

	void add_edge(int from, int to, T cost = T(1)) {
		g[from].emplace_back(from, to, cost);
		if (not directed) {
			g[to].emplace_back(to, from, cost);
		}
	}

	vector<edge<T>>& operator[](const int& idx) {
		return g[idx];
	}

	void read(int e, bool one_indexed) {
		int a, b, c = 1;
		while (e--) {
			scanf("%d%d", &a, &b);
			if (weighted) {
				scanf("%d", &c);
			}
			if (one_indexed)--a, --b;
			add_edge(a, b, c);
		}
	}

	void read(int e, bool one_indexed, const string &format) {
		int a, b;
		T c = T(1);
		while (e--) {
			scanf("%d%d", &a, &b);
			if (weighted) {
				scanf(format, &c);
			}
			if (one_indexed)--a, --b;
			add_edge(a, b, c);
		}
	}

};

int main() {

	int n, m;
	scanf("%d%d", &n, &m);
	graph<int> g(n, false, false);
	g.read(m, true);
	rep(i, n)printf("%d\n", (int)g[i].size());
	
	Please AC;
}

Compiler output:
a.cc:116:1: error: '\U0000feff' does not name a type
  116 | ﻿/*
      |  
a.cc:136:23: error: 'edge' was not declared in this scope
  136 |         vector<vector<edge<T>>> g;
      |                       ^~~~
a.cc:136:28: error: template argument 1 is invalid
  136 |         vector<vector<edge<T>>> g;
      |                            ^
a.cc:136:28: error: template argument 2 is invalid
a.cc:136:29: error: template argument 1 is invalid
  136 |         vector<vector<edge<T>>> g;
      |                             ^~
a.cc:136:29: error: template argument 2 is invalid
a.cc:136:31: error: expected unqualified-id before '>' token
  136 |         vector<vector<edge<T>>> g;
      |                               ^
a.cc:147:16: error: 'edge' was not declared in this scope
  147 |         vector<edge<T>>& operator[](const int& idx) {
      |                ^~~~
a.cc:147:21: error: template argument 1 is invalid
  147 |         vector<edge<T>>& operator[](const int& idx) {
      |                     ^
a.cc:147:21: error: template argument 2 is invalid
a.cc:147:22: error: expected unqualified-id before '>' token
  147 |         vector<edge<T>>& operator[](const int& idx) {
      |                      ^~
a.cc: In constructor 'graph<T>::graph(int, bool, bool)':
a.cc:138:54: error: class 'graph<T>' does not have any field named 'g'
  138 |         graph(int n, bool directed, bool weighted) : g(n), n(n), directed(directed), weighted(weighted) {}
      |                                                      ^
a.cc: In member function 'void graph<T>::add_edge(int, int, T)':
a.cc:141:17: error: 'g' was not declared in this scope
  141 |                 g[from].emplace_back(from, to, cost);
      |                 ^
a.cc: In function 'int main()':
a.cc:184:39: error: no match for 'operator[]' (operand types are 'graph<int>' and 'int')
  184 |         rep(i, n)printf("%d\n", (int)g[i].size());
      |                                       ^