| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 487025 |
2021-11-13T19:31:19 Z |
rainboy |
Ili (COI17_ili) |
C |
|
0 ms |
204 KB |
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 10000
#define M 10000
int *ej[N + M], eo[N + M], *fi[N + M], fo[N + M];
void append(int **ej, int *eo, int i, int j) {
int o = eo[i]++;
if (o >= 2 && (o & o - 1) == 0)
ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
ej[i][o] = j;
}
char state[N + M]; int n, m;
int check(char *cc) {
int i, j, o;
memset(state, -1, (n + m) * sizeof *state);
for (j = n + m - 1; j >= 0; j--) {
if (j >= n && cc[j - n] == '0')
state[j] = 0;
if (state[j] == 0)
for (o = fo[j]; o--; ) {
i = fi[j][o];
state[i] = 0;
}
}
for (i = 0; i < n; i++) {
if (state[i] == -1)
state[i] = 1;
if (state[i] == 1)
for (o = eo[i]; o--; ) {
j = ej[i][o];
state[j] = 1;
}
}
for (j = 0; j < m; j++)
if (cc[j] == '1' && state[n + j] != 1)
return 0;
return 1;
}
int main() {
static char cc[M + 1];
int i, j;
scanf("%d%d%s", &n, &m, cc);
for (i = 0; i < n + m; i++) {
ej[i] = (int *) malloc(2 * sizeof *ej[i]);
fi[i] = (int *) malloc(2 * sizeof *fi[i]);
}
for (j = 0; j < m; j++) {
static char aa[8], bb[8];
int u, v;
scanf("%s%s", aa, bb);
u = atoi(aa + 1) + (aa[0] == 'x' ? 0 : n) - 1, v = atoi(bb + 1) + (bb[0] == 'x' ? 0 : n) - 1;
append(ej, eo, u, n + j), append(fi, fo, n + j, u);
append(ej, eo, v, n + j), append(fi, fo, n + j, v);
}
for (j = 0; j < m; j++)
if (cc[j] == '?') {
cc[j] = '0';
if (!check(cc))
cc[j] = '1';
else {
cc[j] = '1';
cc[j] = !check(cc) ? '0' : '?';
}
}
printf("%s\n", cc);
return 0;
}
Compilation message
ili.c: In function 'append':
ili.c:13:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
13 | if (o >= 2 && (o & o - 1) == 0)
| ~~^~~
ili.c: In function 'main':
ili.c:52:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
52 | scanf("%d%d%s", &n, &m, cc);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
ili.c:61:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
61 | scanf("%s%s", aa, bb);
| ^~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
