제출 #246336

#제출 시각아이디문제언어결과실행 시간메모리
246336NONAMETuna (COCI17_tuna)C++14
50 / 50
5 ms384 KiB
#include <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;
using ld = long double;

int main() {
    fast_io;

    int n, x, ans = 0;

    cin >> n;
    cin >> x;

    for (int i = 0; i < n; ++i) {
        int p1, p2;
        cin >> p1 >> p2;
        if (abs(p1 - p2) > x)
            cin >> p2, p1 = 0;

        ans += max(p1, p2);
    }

    cout << ans << "\n";
}
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