Submission #1158534

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158534		achi	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	100 / 100	188 ms	5760 KiB

foehn_phenomena

// runtime เกิน

#include <bits/stdc++.h>

using namespace std;

int main () {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    long long int N, Q, S, T;
    long long int L, R, X;
    long long int i, j;
    long long int deg = 0, prev = 0, curr;
    scanf("%lld %lld %lld %lld", &N, &Q, &S, &T);

    vector<long long int> diff(N+1);

    for (i = 0; i < N+1; i++) {
        scanf("%lld", &curr);
        diff[i] = prev - curr;
        prev = curr;
        if (diff[i] < 0) {
            deg += (diff[i])*S;
        }
        else {
            deg += (diff[i])*T;
        }
    }

    for (i = 0; i < Q; i++) {
        scanf("%lld %lld %lld", &L, &R, &X);
        if (L-1 >= 0) {
            if (diff[L] < 0) {
                deg -= (diff[L])*S;
            }
            else {
                deg -= (diff[L])*T;
            }

            diff[L] -= X;

            if (diff[L] < 0) {
                deg += (diff[L])*S;
            }
            else {
                deg += (diff[L])*T;
            }
        }
        if (R+1 <= N) {
            if (diff[R+1] < 0) {
                deg -= (diff[R+1])*S;
            }
            else {
                deg -= (diff[R+1])*T;
            }

            diff[R+1] += X;
            
            if (diff[R+1] < 0) {
                deg += (diff[R+1])*S;
            }
            else {
                deg += (diff[R+1])*T;
            }
        }
        cout << deg << endl;
    }

    return 0;
}

Compilation message (stderr)

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     scanf("%lld %lld %lld %lld", &N, &Q, &S, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         scanf("%lld", &curr);
      |         ~~~~~^~~~~~~~~~~~~~~
foehn_phenomena.cpp:33:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |         scanf("%lld %lld %lld", &L, &R, &X);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60