제출 #862294

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
862294	2023-10-18 02:32:22	Truly_	Tracks in the Snow (BOI13_tracks)	C++14	100 / 100	488 ms	122492 KiB

tracks

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#define nametask "tracks"
#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define SZ(a) (int) a.size()
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FOD(i, b, a) for (int i = b; i >= a; i--)
using namespace std;
typedef long long ll;
typedef pair <int, int> pi;
const pi dir[] = {{-1, 0}, {0, -1}, {1, 0}, {0, 1}};
const int N = 4005;
int n, m;
char a[N][N];
int d[N][N];
bool ok(int i, int j){
    return (i >= 1 && i <= n && j >= 1 && j <= m);
}
signed main()
{
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    if (fopen(nametask".inp", "r")){
        freopen(nametask".inp", "r", stdin);
        freopen(nametask".out", "w", stdout);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

tracks.cpp: In function 'int main()':
tracks.cpp:29:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         freopen(nametask".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen(nametask".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70