제출 #129323

#제출 시각아이디문제언어결과실행 시간메모리
129323trinhhungFoehn Phenomena (JOI17_foehn_phenomena)C++14
30 / 100
1038 ms4968 KiB
#include<bits/stdc++.h>

using namespace std;

#define int long long

const int N = 2e5 + 5;
int n, s, t, q, ans = 0;
int a[N], f[N];

main(){
    //ios_base::sync_with_stdio(false);
    //cin.tie(nullptr);
    cin >> n >> q >> s >> t;
    for(int i = 0; i <= n; ++ i) cin >> a[i];
    for(int i = 1; i <= n; ++ i){
        f[i] = a[i] - a[i-1];
        if(f[i] > 0) ans = ans - f[i] * s;
        else ans = ans - f[i] * t;
    }
    while(q --){
        int l, r, x;
        cin >> l >> r >> x;
        if(f[l] > 0) ans += f[l] * s;
        else ans += f[l] * t;
        f[l] += x;
        if(f[l] > 0) ans -= f[l] * s;
        else ans -= f[l] * t;
        if(r >= n){
            cout << ans << '\n';
            continue;
        }
        if(f[r + 1] > 0) ans += f[r + 1] * s;
        else ans += f[r + 1] * t;
        f[r + 1] -= x;
        if(f[r + 1] > 0) ans -= f[r + 1] * s;
        else ans -= f[r + 1] * t;
        cout << ans << '\n';
     }

}

컴파일 시 표준 에러 (stderr) 메시지

foehn_phenomena.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
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