Submission #780278

#	Time	Username	Problem	Language	Result	Execution time	Memory
780278		Cookie	Genetics (BOI18_genetics)	C++14	46 / 100	195 ms	14500 KiB

genetics

#include<bits/stdc++.h>
#include<fstream>
using namespace std;
ifstream fin("VNOICUP.INP");
ofstream fout("VNOICUP.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ld PI = 3.14159265359;
using u128 = __uint128_t;
//const int x[4] = {1, -1, 0, 0};
//const int y[4] = {0, 0, 1, -1};
const ll mod = 998244353;
const int mxn = 4005, mxq = 2e5 + 5, sq = 400, mxv = 2e7 + 5;
//const int base = (1 << 18);
const ll inf = 1e9, neg = -69420;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rr(ll l, ll r){
    return(uniform_int_distribution<ll>(l, r)(rng));
}
int n, m, k;
ll val[mxn + 1], sm[mxn + 1][4];
char a[4005][4005];
int mp[2007];
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    mp['A'] = 0; mp['C'] = 1; mp['G'] = 2; mp['T'] = 3;
    ll tot = 0;
    cin >> n >> m >> k;
    for(int i = 1; i <= n; i++){
        val[i] = rr(1, 1e10); tot += val[i];
    }
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            cin >> a[i][j];
            sm[j][mp[a[i][j]]] += val[i];
        }
    }
    for(int i = 1; i <= n; i++){
        ll cand = 0;
        for(int j = 1; j <= m; j++){
            cand += tot - sm[j][mp[a[i][j]]];
            
        }
        
        if(cand == (tot - val[i]) * k){
            cout << i;
            return(0);
        }
    }
    return(0);
}

Compilation message (stderr)

genetics.cpp: In function 'int main()':
genetics.cpp:45:28: warning: array subscript has type 'char' [-Wchar-subscripts]
   45 |             sm[j][mp[a[i][j]]] += val[i];
      |                      ~~~~~~^
genetics.cpp:51:42: warning: array subscript has type 'char' [-Wchar-subscripts]
   51 |             cand += tot - sm[j][mp[a[i][j]]];
      |                                    ~~~~~~^

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