0分，各位大佬帮帮本蒟蒻看看哪错了吧(T_T)

#include<bits/stdc++.h>

using namespace std;

const int xx = 1e5 + 5;
int m , n;
int a[xx] , id[xx];
int rem;
int main() {
	cin >> n >> m;
	for(int i = 1 ; i <= n ; i ++) cin >> a[i];
	for(int i = 1 ; i <= m ; i ++) id[i] = i;
	int rp = m , ans = 0 , tm  = 0;
	while(rem != n) {
		for(int i = 1 ; i <= m ; i ++) {
			if(id[i] <= n && !(--a[id[i]])) {
				++rem , id[i] = ++ rp;
				++ tm;
			}
		}
	}
	cout << tm;
	return 0;
}