백준 1817번 짐 챙기는 숌 C++

출처 : https://www.acmicpc.net/problem/1817

 

#include <iostream>
#include <string>
#include <vector>
#include <math.h>
#include <algorithm>
#include <utility>
#include <stack>
#include <queue>
#include <math.h>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>

using namespace std;
using ll = long long;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int n, m;
	cin >> n >> m;
	int cnt = 0;
	int weight = m;
	for (int i = 0; i < n; i++) {
		int book;
		cin >> book;
		if (weight + book > m) {
			cnt++;
			weight = book;
		}
		else {
			weight += book;
		}
	}
	cout << cnt;
};