ABC112B - Time Limit Exceeded

問題：B - Time Limit Exceeded

#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

#define REP(i, n) for (int i = 0; i < (n); ++i)
#define PB push_back

int main(void) {
    int n, t, p_cost, p_time;
    vector<int> ret;

    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> n >> t;
    REP(i, n) {
        cin >> p_cost >> p_time;
        if (p_time <= t) {
            ret.PB(p_cost);
        }
    }

    if (ret.size() == 0) {
        cout << "TLE" << "\n";
    } else {
        cout << *min_element(ret.begin(), ret.end()) << "\n";
    }

    return 0;
}

無駄に vector 使って1RE。。