Submission #522130

#	Time	Username	Problem	Language	Result	Execution time	Memory
522130		new_acc	Mutating DNA (IOI21_dna)	C++17	100 / 100	38 ms	8004 KiB

dna

#include<bits/stdc++.h>
#define fi first
#define se second
#define rep(a, b) for(int a = 0; a < (b); a++)
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=1e5+10;
string a,b;
int pref[N][10];
void ob(char a,char b,int i){
	rep(j,10) pref[i][j]=(i==0?0:pref[i-1][j]);
	if(a=='A' and b=='C') pref[i][0]++;
	if(a=='A' and b=='T') pref[i][1]++;
	if(a=='C' and b=='T') pref[i][2]++;
	if(a=='C' and b=='A') pref[i][3]++;
	if(a=='T' and b=='A') pref[i][4]++;
	if(a=='T' and b=='C') pref[i][5]++;
	if(a=='T') pref[i][6]++;
	if(a=='C') pref[i][7]++;
	if(a=='A') pref[i][8]++;
	if(b=='T') pref[i][6]--;
	if(b=='C') pref[i][7]--;
	if(b=='A') pref[i][8]--;
}
void init(string t1,string t2){
	a=t1,b=t2;
	rep(i,t1.size()) ob(t1[i],t2[i],i);
}
int get_distance(int x,int y){
	if(pref[y][6]!=(x==0?0:pref[x-1][6]) or pref[y][7]!=(x==0?0:pref[x-1][7]) or pref[y][8]!=(x==0?0:pref[x-1][8])) return -1;
	int sum0=pref[y][0]-(x==0?0:pref[x-1][0]);
	int sum1=pref[y][1]-(x==0?0:pref[x-1][1]);
	int sum2=pref[y][2]-(x==0?0:pref[x-1][2]);
	int sum3=pref[y][3]-(x==0?0:pref[x-1][3]);
	int sum4=pref[y][4]-(x==0?0:pref[x-1][4]);
	int sum5=pref[y][5]-(x==0?0:pref[x-1][5]);
	return max(sum0,sum3)+max(sum1,sum4)+max(sum2,sum5)-max({abs(sum0-sum3),abs(sum1-sum4),abs(sum2-sum5)});
}

Compilation message (stderr)

dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:4:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define rep(a, b) for(int a = 0; a < (b); a++)
      |                                    ^
dna.cpp:29:2: note: in expansion of macro 'rep'
   29 |  rep(i,t1.size()) ob(t1[i],t2[i],i);
      |  ^~~

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