cf #327 Div.2 Problem B Rebranding
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#include <iostream>#include <cstdio>#include <cstring>using namespace std;int n,m;char aa[30]={'a'};char s[200005];char *ss[200005];char a,b;int main(){ for(int i=1;i<26;i++) aa[i]=aa[i-1]+1; scanf("%d %d",&n,&m); getchar(); gets(s); for(int i=0;i<n;i++) { for(int j=0;j<26;j++) { if(s[i]==aa[j]) { ss[i]=&aa[j]; break; } } } while(m--) { scanf("\n%c %c",&a,&b); for(int i=0;i<26;i++) { if(aa[i]==a) aa[i]=b; else if(aa[i]==b) aa[i]=a; } } for(int i=0;i<n;i++) printf("%c",*ss[i]); printf("\n");}
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