Submission #981506

#	Time	Username	Problem	Language	Result	Execution time	Memory
981506		faqinyeager	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>

int n, a_cnt, b_cnt;
int asum[100050][3], bsum[100050][3];
string aa, bb;

void init(std::string a, std::string b){
	aa = a, bb = b;
	n = (int)a.size();
	for(int i = 0; i < n; i++){
		asum[i][a[i] - 'A'] ++;
		bsum[i][b[i] - 'A'] ++;
	}
	for(int i = 1; i < n; i++){
		for(int j = 0; j < 3; j++){
			asum[i][j] += asum[i - 1][j];
			bsum[i][j] += bsum[i - 1][j]; 
		}
	}
}

int get_distance(int x, int y){
	for(int j = 0; j < 3; j++){
		if(asum[y][j] - asum[x - 1][j] != bsum[y][j] - bsum[x - 1][j]){
			return -1;
		} 
	}
	int cnt = 0;
	for(int i = x; i < y; i++){
		if(aa[i] != bb[i]){
			cnt++;
		}
	}
	return (cnt + 1) / 2;
}

Compilation message (stderr)

dna.cpp:6:1: error: 'string' does not name a type; did you mean 'stdin'?
    6 | string aa, bb;
      | ^~~~~~
      | stdin
dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:9:2: error: 'aa' was not declared in this scope; did you mean 'a'?
    9 |  aa = a, bb = b;
      |  ^~
      |  a
dna.cpp:9:10: error: 'bb' was not declared in this scope; did you mean 'b'?
    9 |  aa = a, bb = b;
      |          ^~
      |          b
dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:31:6: error: 'aa' was not declared in this scope
   31 |   if(aa[i] != bb[i]){
      |      ^~
dna.cpp:31:15: error: 'bb' was not declared in this scope
   31 |   if(aa[i] != bb[i]){
      |               ^~