제출 #1158213

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1158213		achi	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	0 / 100	1094 ms	1864 KiB

foehn_phenomena

#include <bits/stdc++.h>

using namespace std;

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

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

    vector<int> altitiudes(N+1);
    vector<int> answers(Q);

    for (i = 0; i < N+1; i++) {
        scanf("%d", &altitiudes[i]);
        if (i == 0) continue;
        if (altitiudes[i-1] < altitiudes[i]) {
            deg += (altitiudes[i-1] - altitiudes[i])*S;
        }
        else {
            deg += (altitiudes[i-1] - altitiudes[i])*T;
        }
    }

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

            if (altitiudes[L-1] < (altitiudes[L] + X)) {
                deg += (altitiudes[L-1] - (altitiudes[L] + X))*S;
            }
            else {
                deg += (altitiudes[L-1] - (altitiudes[L] + X))*T;
            }
        }
        if (R+1 <= N) {
            if (altitiudes[R] < altitiudes[R+1]) {
                deg -= (altitiudes[R] - altitiudes[R+1])*S;
            }
            else {
                deg -= (altitiudes[R] - altitiudes[R+1])*T;
            }
            
            if ((altitiudes[R] + X) < altitiudes[R+1]) {
                deg += ((altitiudes[R] + X) - altitiudes[R+1])*S;
            }
            else {
                deg += ((altitiudes[R] + X) - altitiudes[R+1])*T;
            }
        }
        for (j = L; j <= R; j++) {
            altitiudes[j] += X;
        }
        // cout << deg << endl;
        answers[i] = deg;
    }

    for (i = 0; i < Q; i++) {
        cout << answers[i] << endl;
    }

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d %d %d %d", &N, &Q, &S, &T);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         scanf("%d", &altitiudes[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         scanf("%d %d %d", &L, &R, &X);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 10
• Subtask 3: 0 / 60