Submission #571533

#TimeUsernameProblemLanguageResultExecution timeMemory
571533il9Mutating DNA (IOI21_dna)C++17
100 / 100
60 ms8584 KiB
#include <bits/stdc++.h> using namespace std; int pre[100001][6]; int n; int q; int pre1[100001][3][2]; int get_distance(int x,int y) { //pre[y+1]-pre[x] int ans[6]; for(int i=0;i<3;i++) { if(pre1[y+1][i][0]-pre1[x][i][0]!=pre1[y+1][i][1]-pre1[x][i][1]) { return -1; } } for(int i=0;i<6;i++) { ans[i]=pre[y+1][i]-pre[x][i]; } int prop=0; for(int i=0;i<6;i+=2) { int temp=min(ans[i],ans[i+1]); prop+=temp; ans[i]-=temp; ans[i+1]-=temp; } int temp=0; for(int i=0;i<6;i++) { temp+=ans[i]; } if(temp%3==0) { temp/=3; temp*=2; }else { temp=2*(temp/3)+temp%3; } return prop+temp; } void init(string a,string b) { n=a.size(); for(int i=0;i<6;i++) { pre[0][i]=0; } pre1[0][0][0]=0; pre1[0][1][0]=0; pre1[0][2][0]=0; pre1[0][0][1]=0; pre1[0][1][1]=0; pre1[0][2][1]=0; for(int i=0;i<n;i++) { for(int j=0;j<3;j++) { pre1[i+1][j][0]=pre1[i][j][0]; pre1[i+1][j][1]=pre1[i][j][1]; } if(a[i]=='A') { pre1[i+1][0][0]++; }else if(a[i]=='T') { pre1[i+1][1][0]++; }else { pre1[i+1][2][0]++; } if(b[i]=='A') { pre1[i+1][0][1]++; }else if(b[i]=='T') { pre1[i+1][1][1]++; }else { pre1[i+1][2][1]++; } } for(int i=0;i<n;i++) { for(int j=0;j<6;j++) { pre[i+1][j]=pre[i][j]; } if(a[i]!=b[i]) { if(a[i]=='A') { if(b[i]=='T') { pre[i+1][0]++; }else if(b[i]=='C') { pre[i+1][2]++; } }else if(a[i]=='T') { if(b[i]=='A') { pre[i+1][1]++; }else if(b[i]=='C') { pre[i+1][5]++; } }else if(a[i]=='C') { if(b[i]=='T') { pre[i+1][4]++; }else if(b[i]=='A') { pre[i+1][3]++; } } } } }
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