Submission #689552

#	Time	Username	Problem	Language	Result	Execution time	Memory
689552		Toxtaq	Mutating DNA (IOI21_dna)	C++17	21 / 100	33 ms	4912 KiB

dna

#include<bits/stdc++.h>
#include "dna.h"
using namespace std;
struct ATC{
    int A = 0, T = 0, C = 0;
};
vector<ATC>cnt_A, cnt_B;
vector<int>pref;
void init(string A, string B){
    pref.resize(A.length() + 1);
    cnt_A.resize(A.length() + 1);
    cnt_B.resize(A.length() + 1);
    for(int i = 1;i <= A.length();++i){
        pref[i] = pref[i - 1];
        if(A[i - 1] != B[i - 1])pref[i]++;
    }

    for(int i = 1;i <= A.length();++i){
        cnt_A[i].A = cnt_A[i - 1].A;
        cnt_A[i].T = cnt_A[i - 1].T;
        cnt_A[i].C = cnt_A[i - 1].C;
        if(A[i - 1] == 'A')cnt_A[i].A++;
        if(A[i - 1] == 'T')cnt_A[i].T++;
        if(A[i - 1] == 'C')cnt_A[i].C++;
    }
    for(int i = 1;i <= A.length();++i){
        cnt_B[i].A = cnt_B[i - 1].A;
        cnt_B[i].T = cnt_B[i - 1].T;
        cnt_B[i].C = cnt_B[i - 1].C;
        if(B[i - 1] == 'A')cnt_B[i].A++;
        if(B[i - 1] == 'T')cnt_B[i].T++;
        if(B[i - 1] == 'C')cnt_B[i].C++;
    }
}
int get_distance(int x, int y){
    x++;
    y++;
    int q = pref[y] - pref[x - 1];
    ATC num1, num2;
    num1.A = cnt_A[y].A - cnt_A[x - 1].A;
    num1.T = cnt_A[y].T - cnt_A[x - 1].T;
    num1.C = cnt_A[y].C - cnt_A[x - 1].C;
    num2.A = cnt_B[y].A - cnt_B[x - 1].A;
    num2.T = cnt_B[y].T - cnt_B[x - 1].T;
    num2.C = cnt_B[y].C - cnt_B[x - 1].C;
//    cout << num1.A << " " << num1.T << " " << num1.C << '\n';
//    cout << num2.A << " " << num2.T << " " << num2.C;
    if(num1.A != num2.A)return -1;
    if(num1.T != num2.T)return -1;
    if(num1.C != num2.C)return -1;
    if(!q)return 0;
    return q - 1;
}
//int main(){
//    init("CTA", "ATC");
//    cout << get_distance(0, 2);
//}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:13:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i = 1;i <= A.length();++i){
      |                   ~~^~~~~~~~~~~~~
dna.cpp:18:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i = 1;i <= A.length();++i){
      |                   ~~^~~~~~~~~~~~~
dna.cpp:26:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i = 1;i <= A.length();++i){
      |                   ~~^~~~~~~~~~~~~

• Subtask 1: 21 / 21
• Subtask 2: 0 / 22
• Subtask 3: 0 / 13
• Subtask 4: 0 / 28
• Subtask 5: 0 / 16