Submission #529204

#	Time	Username	Problem	Language	Result	Execution time	Memory
529204		Icebear16	Mutating DNA (IOI21_dna)	C++17	Compilation error	0 ms	0 KiB

dna

#include "dna.h"
int n,q;
std::string s;
std::string c;
void init(std::string a, std::string b) {
	s=a,c=b;
	int A[n];
	for(int i=0;i<=a.length();i++){
		if(s[i]!=c[i]){
			A[i]=1;
		}else{
			A[i]=0;
		}
	}
	for(int i=1;i<n;i++){
		A[i]+=A[i-1];
	}
	while(q--){
    	int x,y;
		get_distance(x,y);
	}
}
int get_distance(int x, int y) {
//	int h1=0,h2=0,l1=0,l2=0,k1=0,k2=0;
//	for(int i=x;i<=y;i++){
//		if(s[i]=='A'){
//			h1++;
//		}else if(s[i]=='T'){
//			l1++;
//		}else if(s[i]=='C'){
//			k1++;
//		}
//		if(c[i]=='A'){
//			h2++;
//		}else if(c[i]=='T'){
//			l2++;
//		}else if(c[i]=='C'){
//			k2++;
//		}
//	}
	int j=A[y]-A[x]+1;
	if(j%2==0){
		return j/2;
	}else{
		return -1;
	}
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:8:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i=0;i<=a.length();i++){
      |              ~^~~~~~~~~~~~
dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:41:8: error: 'A' was not declared in this scope
   41 |  int j=A[y]-A[x]+1;
      |        ^