Submission #1289061

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define FOR(i, n) for(int i = 0; i < (n); i++)
#define MEM(a, x) memset(a, x, sizeof(a))
#define ALL(a) a.begin(), a.end()
#define UNIQUE(a) a.erase(unique(ALL(a)), a.end())
typedef long long ll;
typedef pair<int, int> P;

int n;
ll k;

int main(int argc, char const *argv[]) {
	ios_base::sync_with_stdio(false);
	cin >> n >> k;
	ll sum = 0, flag = -1;
	FOR(i, n) {
		ll a, b;
		cin >> a >> b;
		sum += b;
		if (flag == -1 && k <= sum) flag = a;
 	}
 	cout << flag << endl;
	return 0;
}

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