제출 #1244821

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1244821		CrabCNH	Unija (COCI17_unija)	C++20	100 / 100	210 ms	6976 KiB

unija

#include <bits/stdc++.h>

#define pii pair <int, int>
#define fi first
#define se second

using namespace std;

const int N = 1e7 + 5;
const int inf = 1e18 + 7;

int mp[N];

signed main () {
    ios_base :: sync_with_stdio (0);
    cin.tie (0);
    cout.tie (0);
    #define task "crab"
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int n;
    cin >> n;
    for (int i = 1; i <= n; i ++) {
        int x, y;
        cin >> x >> y;
        mp[x / 2] = max (mp[x / 2], y / 2);
    }
    int cur = 0;
    long long ans = 0;
    for (int i = 1e7; i >= 1; i --) {
        cur = max (cur, mp[i]);
        ans += cur;
    }
    cout << ans * 4;
}

컴파일 시 표준 에러 (stderr) 메시지

unija.cpp:10:22: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   10 | const int inf = 1e18 + 7;
      |                 ~~~~~^~~
unija.cpp: In function 'int main()':
unija.cpp:20:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
unija.cpp:21:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10