Submission #1142047

#	Time	Username	Problem	Language	Result	Execution time	Memory
1142047		rayank	Mutating DNA (IOI21_dna)	C++20	Compilation error	0 ms	0 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
string A;
string B;
void init(string a, string b) {
	A = a;
	B = b;
}

int find_pos(int k, vector<int> nums){
	for(int i = 0; i < nums.size(); i++){
		if(nums[i] == k){
			return i;
		}
	}
	return -1;
}

vector<int> string_to_int(string s){
	map<char, int> nums;
	vector<int> res;
	nums['A'] = 0;
	nums['C'] = 1;
	nums['T'] = -1;
	for(int i = 0; i < s.size(); i++){
		res.push_back(nums[s[i]]);
	}
	return res;
	
}

int get_distance(int x, int y) {
	vector<int> a = string_to_int(A.substr(x,y));
	vector<int> b = string_to_int(B.substr(x,y));
	if(accumulate(a.begin(), a.end(), 0) != accumulate(b.begin(), b.end(), 0)){
		return -1;
	}
	int res =  0;
	int i = 0;
	while(a!=b){
		if(i >= a.size()){
			i = 0;
		}
		if(a[i] == b[i]){
			i++;
			continue;
		} 

		swap(a[i], a[find_pos(a[i], b)]);
		res++;
		i++;
	}

	return res;
}


int main() {
  int n,q;
  cin>>n>>q;
  string a,b;
  cin>>a>>b;
  init(a,b);
  while(q--){
      int x,y;
      cin>>x>>y;
      cout<<get_distance(x,y)<<endl;
  }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccyCTbKI.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccA6JhZw.o:dna.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status