#include #define rep(i,n) for(long long int (i)=0;(i)<(int)(n);(i)++) #define rrep(i,a,b) for(long long int i=(a);i<(b);i++) #define rrrep(i,a,b) for(long long int i=(a);i>=(b);i--) #define all(v) (v).begin(), (v).end() #define pb(q) push_back(q) #define Size(n) (n).size() #define Cout(x) cout<<(x)<>s>>a>>b; char c; c=s[a]; s[a]=s[b]; s[b]=c; Cout(s); return 0; }