Submission #678142

#	Time	Username	Problem	Language	Result	Execution time	Memory
678142		Muhammetali	Mutating DNA (IOI21_dna)	C++17	35 / 100	42 ms	7696 KiB

dna

#include "dna.h"
#include<bits/stdc++.h>
using namespace std;
string s,ss;
int dna[2][3][100001],jem[100001],res[100001][6];
map<char,int>mp;
void init(string s,string ss) {
	mp['A']=0;
	mp['T']=1;
	mp['C']=2;
	dna[0][mp[s[0]]][0]=1;
	dna[1][mp[ss[0]]][0]=1;
	if(s[0]==ss[0])jem[0]=1;
	for(int i=1;i<s.size();i++){
		jem[i]=jem[i-1];
		if(s[i]==ss[i])jem[i]++;
		for(int j=0;j<3;j++){
			dna[0][j][i]=dna[0][j][i-1];
			dna[1][j][i]=dna[1][j][i-1];
		}
		dna[0][mp[s[i]]][i]++;
		dna[1][mp[ss[i]]][i]++;
	}
	for(int i=0;i<s.size();i++){
		if(i)for(int j=0;j<6;j++)res[i][j]=res[i-1][j];
		if(s[i]=='A'){
			if(ss[i]=='T'){
				res[i][0]++;
			}
			else{
				res[i][2]++;
			}
		}else if(s[i]=='T'){
			if(ss[i]=='A'){
				res[i][1]++;
			}else{
				res[i][5]++;
			}
		}else{
			if(ss[i]=='A'){
				res[i][3]++;
			}else{
				res[i][4]++;
			}
		}
	}
}
int get_distance(int x,int y) {
	int cnt=jem[y]-(x-1<0?0:jem[x-1]);
	int a1=dna[0][0][y]-(x-1<0?0:dna[0][0][x-1]);
	int t1=dna[0][1][y]-(x-1<0?0:dna[0][1][x-1]);
	int c1=dna[0][2][y]-(x-1<0?0:dna[0][2][x-1]);
	int a2=dna[1][0][y]-(x-1<0?0:dna[1][0][x-1]);
	int t2=dna[1][1][y]-(x-1<0?0:dna[1][1][x-1]);
	int c2=dna[1][2][y]-(x-1<0?0:dna[1][2][x-1]);
	int len=y-x+1;
	if(a1!=a2 || t1!=t2 || c1!=c2)return -1;
	int at=min(res[y][0]-(x-1<0?0:res[x-1][0]),res[y][1]-(x-1<0?0:res[x-1][1]));
	int ac=min(res[y][2]-(x-1<0?0:res[x-1][2]),res[y][3]-(x-1<0?0:res[x-1][3]));
	int tc=min(res[y][4]-(x-1<0?0:res[x-1][4]),res[y][5]-(x-1<0?0:res[x-1][5]));
	int atc=len-(cnt+(at*2)+(ac*2)+(tc*2));
	return (at+ac+tc+((atc/3)*2));
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:14:15: 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=1;i<s.size();i++){
      |              ~^~~~~~~~~
dna.cpp:24:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(int i=0;i<s.size();i++){
      |              ~^~~~~~~~~

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