Submission #443706

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
443706	2021-07-11 14:54:22	BeanZ	Tracks in the Snow (BOI13_tracks)	C++14	100 / 100	1036 ms	143144 KiB

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// I_Love_LPL 1y0m2d
#include <bits/stdc++.h>
using namespace std;
#define ll int
#define endl '\n'
const int N = 4005;
long long mod = 1000007;
const int lim = 4e5 + 5;
const int lg = 20;
const int base = 311;
const long double eps = 1e-6;
ll nx[4] = {0, 0, 1, -1};
ll ny[4] = {1, -1, 0, 0};
char a[N][N];
ll dp[N][N];
struct viet{
    ll x, y, v;
};
ll n, m;
bool check(ll x, ll y){
    if (x < 1 || x > n || y < 1 || y > m || a[x][y] == '.') return false;
    else return true;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    if (fopen("tests.inp", "r")){
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
 
 
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Compilation message (stderr)

tracks.cpp: In function 'int main()':
tracks.cpp:28:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
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("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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