제출 #1306960

#제출 시각아이디문제언어결과실행 시간메모리
1306960ballbreakerFoehn Phenomena (JOI17_foehn_phenomena)C++20
100 / 100
233 ms7340 KiB
#include <bits/stdc++.h> #define int long long using namespace std; main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n, q, s, t; cin >> n >> q >> s >> t; int a[n + 1]; int d[n + 2] = {}; for (int i = 0; i <= n; i++) { cin >> a[i]; } int ans = 0; for (int i = 1; i <= n; i++) { d[i] = a[i] - a[i - 1]; if (a[i - 1] < a[i]) { ans -= s * (a[i] - a[i - 1]); } else { ans += t * (a[i - 1] - a[i]); } } // cout << ans << endl; while (q--) { int l, r, x; cin >> l >> r >> x; if (d[l] > 0) { ans += s * d[l]; } else { ans += t * d[l]; } d[l] += x; if (d[l] > 0) { ans -= s * d[l]; } else { ans -= t * d[l]; } if (r + 1 <= n) { if (d[r + 1] > 0) { ans += s * d[r + 1]; } else { ans += t * d[r + 1]; } d[r + 1] -= x; if (d[r + 1] > 0) { ans -= s * d[r + 1]; } else { ans -= t * d[r + 1]; } } cout << ans << endl; } }

컴파일 시 표준 에러 (stderr) 메시지

foehn_phenomena.cpp:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main() {
      | ^~~~
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