Submission #1069929

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069929		erdemfurkan	Mutating DNA (IOI21_dna)	C++17	0 / 100	23 ms	6652 KiB

dna

#include "bits/stdc++.h"
using namespace std;
 
string A;
string B;

int prea[3][100007];
int preb[3][100007];
int prec[100007];

void init(string a, string b) {
	A = a;
	B = b;
	for(int i = 0; i < A.length(); i++) {
		prea[0][i+1] = prea[0][i] + (A[i] == 'A');
	}
	for(int i = 0; i < A.length(); i++) {
		prea[1][i+1] = prea[1][i] + (A[i] == 'T');
	}
	for(int i = 0; i < A.length(); i++) {
		prea[2][i+1] = prea[2][i] + (A[i] == 'C');
	}
	for(int i = 0; i < B.length(); i++) {
		preb[0][i+1] = preb[0][i] + (B[i] == 'A');
	}
	for(int i = 0; i < B.length(); i++) {
		preb[1][i+1] = preb[1][i] + (B[i] == 'T');
	}
	for(int i = 0; i < B.length(); i++) {
		preb[2][i+1] = preb[2][i] + (B[i] == 'C');
	}
	for(int i = 0; i < A.length(); i++) {
		prec[i+1] = prec[i] + (A[i] == B[i]);
	}
}

int get_distance(int x, int y) {
	x++;
	y++;
	int i = prea[0][y] - prea[0][x-1];
	int j = prea[1][y] - prea[1][x-1];
	int k = prea[2][y] - prea[2][x-1];
	int ii = preb[0][y] - preb[0][x-1];
	int jj = preb[1][y] - preb[1][x-1];
	int kk = preb[2][y] - preb[2][x-1];
	if(ii != i || jj != j || kk != k) {
		return -1;
	}
	int l = y-x+1;
	return (l - (prec[y] - prec[x-1] + 1))/2;
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = 0; i < A.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:17:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  for(int i = 0; i < A.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for(int i = 0; i < A.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for(int i = 0; i < B.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:26:19: 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 = 0; i < B.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |  for(int i = 0; i < B.length(); i++) {
      |                 ~~^~~~~~~~~~~~
dna.cpp:32:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for(int i = 0; i < A.length(); i++) {
      |                 ~~^~~~~~~~~~~~

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