제출 #1231656

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1231656		Art	Zemljište (COCI22_zemljiste)	C++20	70 / 70	233 ms	1444 KiB

Main

//      - Art -
#include <bits/stdc++.h>

#define el              cout << '\n'

#define FOR(i, a, b)    for (int i = (a), _b = (b); i <= _b; ++i)
#define REV(i, b, a)    for (int i = (b), _a = (a); i >= _a; --i)
#define REP(i, c)       for (int i = 0, _c = (c); i < _c; ++i)

const int N = 5e2 + 7;

template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }

template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }

using namespace std;

int a[N][N];
long long sum[N], pre[N];

int main() {

     #define name "art"
     if (fopen(name".inp", "r")) {
         freopen(name".inp", "r", stdin);
         freopen(name".out", "w", stdout);
     }

    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);

    int m, n, A, B;
    cin >> m >> n >> A >> B;
    if (A > B) {
        swap(A, B);
    }

    long long res = 1e18;
    FOR (i, 1, m) FOR (j, 1, n) {
        cin >> a[i][j];
    }

    FOR (x1, 1, m) {
        FOR (i, 1, n) {
            sum[i] = 0;
            pre[i] = 0;
        }
        FOR (x2, x1, m) {
            int idx1 = 0, idx2 = 0;
            FOR (i, 1, n) {
                sum[i] += a[x2][i];
                pre[i] = pre[i - 1] + sum[i];
                while (pre[i] - pre[idx1] >= B) {
                    long long c = pre[i] - pre[idx1];
                    minimize(res, c + c - A - B);
                    ++idx1;
                }
                if (A >= (pre[i] - pre[idx1])) {
                    long long c = pre[i] - pre[idx1];
                    minimize(res, A + B - c - c);
                }

                while (pre[i] - pre[idx2] >= A) {
                    if (pre[i] - pre[idx2] <= B) {
                        minimize(res, B - A);
                    }
                    ++idx2;
                }
            }
        }
    }
    cout << res, el;

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:33:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |          freopen(name".inp", "r", stdin);
      |          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:34:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |          freopen(name".out", "w", stdout);
      |          ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40