AAnOlympianMathProblem #include<bits/stdc++.h>usingnamespacestd;typedeflonglongll;llT,n;intmain(){scanf("%lld",&T);while(T--){scanf("%lld",&n...

AGudakoandRitsuka BCallofAccepted CConvexHull DMadeInHeaven#include<bits/stdc++.h>usingnamespacestd;constintMM=1e5+5;constintINF=1e9+7;intd...

AHardtoprepare#include<bits/stdc++.h>usingnamespacestd;#defineN1000005longlongmod=1e9+7;longlongpower(longlonga,longlongb){a%=mod;longlongret=1;while(b){i...

A MagicMirror#include<bits/stdc++.h>usingnamespacestd;chars[20];intmain(){intT;scanf("%d",&T);cin.ignore();while(T--){gets(s);intlen=strlen(s);fo...