Submission #94320

#	Time	Username	Problem	Language	Result	Execution time	Memory
94320		dalgerok	Genetics (BOI18_genetics)	C++14	0 / 100	158 ms	7288 KiB

genetics

#include<bits/stdc++.h>
#define int long long
using namespace std;



const int N = 4105;
const char letters[] = {'A', 'C', 'G', 'T'};



int n, m, k, val[N], sum, d[N][4];
char a[N][N];


inline int rnd(){
    int cur = 0;
    cur ^= (rand() << 0);
    cur ^= (rand() << 15);
    cur ^= (rand() << 18);
    return cur;
}

main(){
    srand(time(nullptr));
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> m >> k;
    for(int i = 1; i <= n; i++){
        val[i] = rnd();
        sum += val[i];
        for(int j = 1; j <= m; j++){
            cin >> a[i][j];
        }
    }
    for(int it = 0; it < 4; it++){
        for(int j = 1; j <= n; j++){
            for(int i = 1; i <= n; i++){
                if(a[i][j] == letters[it]){
                    d[j][it] += val[i];
                }
            }
        }
    }
    for(int i = 1; i <= n; i++){
        int cur = 0;
        for(int j = 1; j <= m; j++){
            for(int l = 0; l < 4; l++){
                if(a[i][j] != letters[l]){
                    cur += d[j][l];
                }
            }
        }
        if(cur == k * (sum - val[i])){
            return cout << i, 0;
        }
    }
}

Compilation message (stderr)

genetics.cpp:24:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

• Subtask 1: 0 / 27
• Subtask 2: 0 / 19
• Subtask 3: 0 / 28
• Subtask 4: 0 / 26