Submission #529188

#	Time	Username	Problem	Language	Result	Execution time	Memory
529188		Icebear16	Mutating DNA (IOI21_dna)	C++17	0 / 100	31 ms	3852 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;
	while(q--){
    	int x,y;
		get_distance(x,y);
	}
}
int get_distance(int x, int y) {
	int h1,h2,l1,l2,k1,k2;
	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++;
		}
	}
	if(h1==h2 && l1==l2 && k1==k2){
		int j=0;
		for(int i=x;i<=y;i++){
			if(s[i]!=c[i]){
				j+=1;
			}
		}
		if(j%2==1){
			j+=1;
		}
		return j/2;
	}else{
		return -1;
	}
}

Compilation message (stderr)

dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:30:7: warning: 'h1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   30 |  if(h1==h2 && l1==l2 && k1==k2){
      |     ~~^~~~
dna.cpp:30:7: warning: 'h2' may be used uninitialized in this function [-Wmaybe-uninitialized]
dna.cpp:30:17: warning: 'l1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   30 |  if(h1==h2 && l1==l2 && k1==k2){
      |               ~~^~~~
dna.cpp:30:17: warning: 'l2' may be used uninitialized in this function [-Wmaybe-uninitialized]
dna.cpp:30:22: warning: 'k1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   30 |  if(h1==h2 && l1==l2 && k1==k2){
      |     ~~~~~~~~~~~~~~~~~^~~~~~~~~
dna.cpp:30:22: warning: 'k2' may be used uninitialized in this function [-Wmaybe-uninitialized]

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