摘要： #include <stdio.h>#include <string.h>int main(){ int n ,m ,k ,s ,t ,i ,j ,f[105][105] ,a[105] ,b[105]; while(scanf("%d %d %d %d",&n ,&m ,&k ,&s) != EOF) { memset(f ,0 ,sizeof(f)); for(i = 1 ;i <= k ;i++) scanf("%d %d",&a[i] ,&b[i]); for(j = 阅读全文