Submission #738896

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
738896	2023-05-09 15:33:46	He_Huanglu	Maze (JOI23_ho_t3)	C++17	8 / 100	496 ms	628496 KiB

Main

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#include <bits/stdc++.h>
#define ii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 6e6 + 3;
int n, m, s, rs, cs, re, ce;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
vector <int> f[N], a[N], p[2][N];
queue <ii> q[2];
int get(int t, int id, int u) {
    return p[t][id][u] == u ? u : p[t][id][u] = get(t, id, p[t][id][u]);
}
void upd(int t, int id, int i, int j, int val) {
    int u = get(t, id, i);
    while (u <= j) {
        if(t) f[id][u] = val;
        else f[u][id] = val;
        u = get(t, id, u + 1);
        p[t][id][i] = u;
    }
}
main () {
    cin.tie(0)->sync_with_stdio(0);
    if(fopen("task.inp", "r")) {
 
 
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Compilation message (stderr)

Main.cpp:28:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   28 | main () {
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:77:25: warning: unused variable 'u' [-Wunused-variable]
   77 |                     int u = x + dx[i], v = y + dy[i], val = f[x][y] + 1;
      |                         ^
Main.cpp:77:40: warning: unused variable 'v' [-Wunused-variable]
   77 |                     int u = x + dx[i], v = y + dy[i], val = f[x][y] + 1;
      |                                        ^
Main.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen("task.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen("wa.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 19
• Subtask 3: 0 / 16
• Subtask 4: 0 / 19
• Subtask 5: 0 / 5
• Subtask 6: 0 / 19
• Subtask 7: 0 / 8
• Subtask 8: 0 / 6