제출 #576058

#제출 시각아이디문제언어결과실행 시간메모리
576058KrisjanisPDNA 돌연변이 (IOI21_dna)C++17
100 / 100
53 ms10896 KiB
#include "dna.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; const ll MX_N = 1e5; ll ps[3][3][MX_N]; // ATC void init(std::string a, std::string b) { ll n = a.size(); for(ll i=0;i<n;i++) { ll av,bv; if(a[i]=='A') av=0; else if(a[i]=='T') av=1; else av=2; if(b[i]=='A') bv=0; else if(b[i]=='T') bv=1; else bv=2; ps[av][bv][i]++; if(i) { for(ll j=0;j<3;j++) { for(ll k=0;k<3;k++) { ps[j][k][i]+=ps[j][k][i-1]; } } } } } int get_distance(int x, int y) { ll matrix[3][3]; for(ll i=0;i<3;i++) { for(ll j=0;j<3;j++) { matrix[i][j] = ps[i][j][y]; if(x) matrix[i][j] -= ps[i][j][x-1]; } } ll cnt[2][3]; for(ll i=0;i<2;i++) for(ll j=0;j<3;j++) cnt[i][j]=0; for(ll i=0;i<3;i++) { for(ll j=0;j<3;j++) { cnt[0][i] += matrix[i][j]; cnt[1][j] += matrix[i][j]; } } for(ll i=0;i<3;i++) if(cnt[0][i]!=cnt[1][i]) return -1; ll res[2] = {}; // swaping, permuting for(ll i=0;i<3;i++) { for(ll j=i+1;j<3;j++) { ll mn = min(matrix[i][j],matrix[j][i]); ll mx = max(matrix[i][j],matrix[j][i]); res[0] += mn; res[1] += mx-mn; } } //cout<<res[0]<<" "<<res[1]<<"\n"; return res[0]+2*res[1]/3; }
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