Rebranding
#include <stdio.h> char N[200005]; int main(void){ int n,m; char x,y; scanf("%d %d",&n,&m); scanf("%s",N); for(int i=0;i<m;i++){ scanf(" %c %c",&x,&y); if(x==y) continue; for(int j=0;j<n;j++){ if(N[j]==x){ N[j]=y; } else if(N[j]==y){ N[j]=x; } } } printf("%s\n",N); return 0; }