oj.uz

Submission #576541

# Submission time Handle Problem Language Result Execution time Memory
576541 2022-06-13T07:29:29 Z Jassar Fountain (eJOI20_fountain) C++14
30 / 100
 255 ms 3520 KB 
#include <bits/stdc++.h>
#define ll long long

using namespace std;

int main()
{
	ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	ll n,q;
	cin >> n >> q;
	vector<pair<ll , ll>> v;
	stack<ll> s;
    ll sum[n];
	for (ll i=0; n>i; i++)
    {
        ll a,b;
        cin >> a >> b;
        v.push_back({a , b});
        sum[i] = v[i].second;
        if (i > 0) sum[i] += sum[i-1];
    }
    while (q--)
    {
        ll a,b;
        cin >> a >> b;
        a--;
        int g = b;
        if (a > 0)
        {
            g += sum[a-1];
        }
        int l = 0 , mid = (n / 2) , r = n;
        while (l != r)
        {
            if (sum[mid] >= g)
            {
                r = mid;
                mid = (r + l) / 2;
            }
            else
            {
                l = mid + 1;
                mid = (l + r) / 2;
            }
        }
        if (r == n)
        {
            cout << 0 << endl;
        }
        else
        {
            cout << l + 1 << endl;
        }
    }
	return 0;
}

Subtask #1
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 3520 KB Output is correct
2 Correct 255 ms 3320 KB Output is correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -