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input/code.cpp: In function 'int get(std::string, int)':
input/code.cpp:9:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(idx>=s.length())
                      ^

#include<iostream>
#include<queue>
#include<stack>

using namespace std;

unsigned int mem[3000][100];
inline int get(string s, int idx){
    if(idx>=s.length())
        return 0;
    return (s[idx]=='1');
}

//JOS TÄÄ MENEE LÄPI NÄIN NIIN VIHAAN ERITTÄIN PALJON
// EN MUUTEN SAA 64-bit popcount toimimaa ;_____;

int main(){
    //cout<<__builtin_popcount(4)<<endl;
    int n,m;
    cin>>n>>m;
    
    for(int i=0; i<n; i++){
        string s;
        cin>>s;
        for(int j=0; j<100; j++){
            long long luku = 0;
            for(int k=0; k<32; k++){
                luku = 2*luku + get(s, 32*j + k);
            }
            mem[i][j] = luku;
        }
    }
    
    long long ret = 0;


    for(int i=0; i<n; i++){
        for(int j=0; j<i; j++){
            long long cnt = 0;
            for(int k=0; k<50; k++){
                cnt += __builtin_popcount(mem[i][k]&mem[j][k]);
            }
            ret += (cnt*(cnt-1))/2;
        }
    }
    
    cout<<ret<<endl;
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: TIME LIMIT EXCEEDED

Test 24

Verdict: TIME LIMIT EXCEEDED

Test 25

Verdict: TIME LIMIT EXCEEDED

Test 26

Verdict: TIME LIMIT EXCEEDED

Test 27

Verdict: TIME LIMIT EXCEEDED