제출 #1325983

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1325983		Aviansh	Fish 3 (JOI24_fish3)	C++20	7 / 100	71 ms	9168 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define int long long

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n,d;
    cin >> n >> d;
    int c[n];
    for(int &i : c){
        cin >> i;
    }
    int lef[n];
    int las = -1;
    int pref[n];
    pref[0]=c[0];
    for(int i = 0;i<n;i++){
        if(c[i]==0)
            las=i;
        lef[i]=las;
        if(i){
            pref[i]=pref[i-1]+c[i];
        }
    }
    int q;
    cin >> q;
    while(q--){
        int l,r;
        cin >> l >> r;
        l--;r--;
        r=lef[r];
        if(r<l){
            cout << 0 << "\n";
            continue;
        }
        int ans = pref[r];
        if(l){
            ans-=pref[l-1];
        }
        if(ans){
            if(d==1){
                cout << ans << "\n";
            }
            else{
                cout << -1 << "\n";
            }
        }
        else{
            cout << 0 << "\n";
        }
    }
    return 0;
}

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• Subtask 2: 7 / 7
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