Submission #440705

#	Time	Username	Problem	Language	Result	Execution time	Memory
440705		haxorman	Fountain (eJOI20_fountain)	C++14	30 / 100	83 ms	2164 KiB

fountain

#include <bits/stdc++.h>
using namespace std;

const int mxN = 1e5 + 7;

int d[mxN], c[mxN];

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, q;
    cin >> n >> q;

    for (int i = 0; i < n; ++i) {
        cin >> d[i] >> c[i];
    }

    vector<int> pref(n);
    pref[0] = c[0];
    for (int i = 1; i < n; ++i) {
        pref[i] = pref[i - 1] + c[i];
    }

    while (q--) {
        int r, v;
        cin >> r >> v;
        --r;

        v += (r ? pref[r - 1] : 0);
        auto it = lower_bound(pref.begin(), pref.end(), v);
        if (it == pref.end()) {
            cout << "0\n";
        }
        else {
            cout << it - pref.begin() + 1 << "\n";
        }
    }
}

• Subtask 1: 0 / 30
• Subtask 2: 30 / 30
• Subtask 3: 0 / 40