Submission #1128936

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
11289362024-12-22 16:32:47ivazivaBliskost (COI23_bliskost)C++20
0 / 100
0 ms324 KiB
#include <bits/stdc++.h>
using namespace std;
#define MAXN 1000001
int n,q;
string s1,s2;
int main()
{
cin>>n>>q;cin>>s1>>s2;int sum=0;
for (int i=0;i<n;i++)
{
int val=s2[i]-s1[i];sum+=val;
if (val<0) sum+='z'-'a'+1;
}
if (sum%2==0) cout<<"da"<<endl;
else cout<<"ne"<<endl;
for (int z=0;z<q;z++)
{
int p;cin>>p;char c;cin>>c;
int val1=s2[p-1]-s1[p-1];
if (val1<0) val1+='z'-'a'+1;
int val2=s2[p-1]-c;
if (val2<0) val2+='z'-'a'+1;
sum+=val2-val1;s1[p-1]=c;
if (sum%2==0) cout<<"da"<<endl;
else cout<<"ne"<<endl;
}
 
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