Submission #529291

#	Time	Username	Problem	Language	Result	Execution time	Memory
529291		Icebear16	Mutating DNA (IOI21_dna)	C++17	21 / 100	34 ms	5560 KiB

dna

#include "dna.h"
#include<vector>
int n,q;
std::string s;
std::string c;
std::vector<int> A;
std::vector<int> B;
std::vector<int> C;
std::vector<int> D;
std::vector<int> E;
std::vector<int> F;
std::vector<int> G;
void init(std::string a, std::string b) {
	n=a.length();
	s=a,c=b;
	A.push_back(0),B.push_back(0),C.push_back(0),D.push_back(0),E.push_back(0),F.push_back(0),G.push_back(0);
	for(int i=0;i<n;i++){
		if(a[i]!=b[i]){
			A.push_back(1);
			if(s[i]=='A'){
				B.push_back(1);
				C.push_back(0);
				F.push_back(0);
			}else if(s[i]=='C'){
				C.push_back(1);
				B.push_back(0);
				F.push_back(0);
			}else{
				F.push_back(1);
				B.push_back(0);
				C.push_back(0);
			}
			if(c[i]=='A'){
				D.push_back(1);
				E.push_back(0);
				G.push_back(0);
			}else if(c[i]=='C'){
				E.push_back(1);
				D.push_back(0);
				G.push_back(0);
			}else{
				G.push_back(1);
				D.push_back(0);
				E.push_back(0);
			}
		}else{
			A.push_back(0);
			B.push_back(0);
			C.push_back(0);
			D.push_back(0);
			E.push_back(0);
			F.push_back(0);
			G.push_back(0);
		}
	}
	for(int i=1;i<=n;i++){
		A[i]+=A[i-1];
		B[i]+=B[i-1];
		C[i]+=C[i-1];
		D[i]+=D[i-1];
		E[i]+=E[i-1];
		F[i]+=F[i-1];
		G[i]+=G[i-1];
	}
	while(q--){
    	int x,y;
		get_distance(x,y);
	}
}
int get_distance(int x, int y) {
	int j=A[y+1]-A[x],h1=B[y+1]-B[x],h2=D[y+1]-D[x],l1=C[y+1]-C[x],l2=E[y+1]-E[x],k1=F[y+1]-F[x],k2=G[y+1]-G[x];
	if((h1+l1+k1)==j && h1==h2 && l1==l2 && k1==k2){
		if(j%3==1){
			return j/2;
		}else if(j%3==2){
			return (j/3)+1;
		}else{
			return 2*(j/3);
		}
	}else{
		return -1;
	}
}
//7 3
//ATATATA
//TATTATT
//1 5
//0 2
//0 6

//3 2
//ATC
//CAT
//0 2
//0 1

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