Submission #1113720

#	Time	Username	Problem	Language	Result	Execution time	Memory
1113720		Nipphitch	Modsum (NOI12_modsum)	C++17	25 / 25	29 ms	592 KiB

modsum

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=1005;

int n,v[N],w[N];

int slove(int now,int now_sum){
    if(now==n) return (now_sum*now_sum*now_sum*now_sum+2*now_sum*now_sum)%5+1;
    int res=0;
    for(int i=v[now+1];i<=w[now+1];i++){
        res+=slove(now+1,now_sum+i);
    }
    return res;
}

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    for(int i=1;i<=n;i++) cin >> v[i] >> w[i];
    cout << slove(0,0);
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5