Question Link :-[ E. K-periodic Garland](https://codeforces.net/contest/1353/problem/E)↵
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My Solution is here ↵
```↵
↵
~~~~~↵
#include <climits>↵
#include<iostream>↵
#include<bits/stdc++.h>↵
#include<algorithm>↵
#include<queue>↵
#include <vector>↵
#define ll long long int ↵
using namespace std;↵
int main(){↵
ll t;↵
cin>>t;↵
while(t--){↵
ll n,k;↵
cin>>n>>k;↵
string s ;↵
cin>>s;↵
//cout<<"s="<<s<<" k"<<k<<endl;↵
vector<char> dp[k];↵
ll i;↵
ll total=0;↵
for(i=0;i<n;i++){↵
if(s[i]=='1'){↵
total++;↵
}↵
dp[i%k].push_back(s[i]);↵
}↵
ll min1=INT_MAX;↵
for(i=0;i<k;i++){↵
string ansString="";↵
string mainAns="";↵
ll j;↵
for(j=0;j<dp[i].size();j++){↵
if(dp[i][j]=='0'&&ansString.length()==0){↵
continue;↵
} ↵
else{↵
ansString=ansString+dp[i][j];↵
}↵
}↵
//cout<<"ansString"<<ansString<<endl;↵
for(ll kk=ansString.length()-1;kk>=0;kk--){↵
if(ansString[kk]=='0'&& mainAns.length()==0){↵
continue;↵
} ↵
else{↵
// cout<<ansString[kk]<<" ";↵
mainAns=ansString[kk]+mainAns;↵
}↵
}↵
//cout<<"mainAns"<<mainAns<<endl;↵
ll totalCount = count(dp[i].begin(),dp[i].end(),'1');↵
// cout<<"totalCount"<<totalCount<<endl;↵
ll minReq = mainAns.length()-2*totalCount+total;↵
if(minReq<min1){↵
min1=minReq;↵
}↵
}↵
cout<<min1<<endl;↵
}↵
}↵
~~~~~↵
↵
↵
```↵
I confused why i got TLE but codeforces ↵
↵
↵
↵
My Solution is here ↵
```↵
↵
~~~~~↵
#include <climits>↵
#include<iostream>↵
#include<bits/stdc++.h>↵
#include<algorithm>↵
#include<queue>↵
#include <vector>↵
#define ll long long int ↵
using namespace std;↵
int main(){↵
ll t;↵
cin>>t;↵
while(t--){↵
ll n,k;↵
cin>>n>>k;↵
string s ;↵
cin>>s;↵
//cout<<"s="<<s<<" k"<<k<<endl;↵
vector<char> dp[k];↵
ll i;↵
ll total=0;↵
for(i=0;i<n;i++){↵
if(s[i]=='1'){↵
total++;↵
}↵
dp[i%k].push_back(s[i]);↵
}↵
ll min1=INT_MAX;↵
for(i=0;i<k;i++){↵
string ansString="";↵
string mainAns="";↵
ll j;↵
for(j=0;j<dp[i].size();j++){↵
if(dp[i][j]=='0'&&ansString.length()==0){↵
continue;↵
} ↵
else{↵
ansString=ansString+dp[i][j];↵
}↵
}↵
//cout<<"ansString"<<ansString<<endl;↵
for(ll kk=ansString.length()-1;kk>=0;kk--){↵
if(ansString[kk]=='0'&& mainAns.length()==0){↵
continue;↵
} ↵
else{↵
// cout<<ansString[kk]<<" ";↵
mainAns=ansString[kk]+mainAns;↵
}↵
}↵
//cout<<"mainAns"<<mainAns<<endl;↵
ll totalCount = count(dp[i].begin(),dp[i].end(),'1');↵
// cout<<"totalCount"<<totalCount<<endl;↵
ll minReq = mainAns.length()-2*totalCount+total;↵
if(minReq<min1){↵
min1=minReq;↵
}↵
}↵
cout<<min1<<endl;↵
}↵
}↵
~~~~~↵
↵
↵
```↵
I confused why i got TLE but codeforces ↵
