6
19
2014
1

Gaussian Elimination

namespace gae{
    const int N=1600,M=1600;
    int n,m,p[M+10];
    bitset<M+10>a[N+10];
    void run(){
        for(int i=1;i<=n;++i){
            int j=1;for(;j<=m&&!a[i][j];++j);
            if(j<=m){
                p[j]=i;
                for(int k=1;k<=n;++k)if(k!=i&&a[k][j])
                    a[k]^=a[i];
            }
        }
    }
}
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