# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
696198 | hasanovr | Mutating DNA (IOI21_dna) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "dna.h"
#define ll long long
#define sz1 5
#define sz2 100005
ll hsh[85], tbl[sz1][sz1][sz2], cnt[sz1][szs2], t[sz1][sz1];
void init(string a, string b){
hsh['A'] = 1;
hsh['C'] = 2;
hsh['T'] = 3;
a = ' ' + a;
b = ' ' + b;
for(int i = 1; i < a.size(); i++){
cnt[hsh[a[i]]][i]++, cnt[hsh[b[i]]][i]--;
for(int j = 1; j <= 3; j++){
cnt[j][i] += cnt[j][i - 1];
}
for(int j = 1; j <= 3; j++){
for(int k = 1; k <= 3; k++){
tbl[j][k][i] = tbl[j][k][i - 1];
}
}
tbl[hsh[a[i]]][hsh[b[i]]][i]++;
}
}
int get_distance(int x, int y){
x++, y++;
for(int i = 1; i <= 3; i++){
if(cnt[i][y] != cnt[i][x - 1]){
return -1;
}
}
for(int i = 1; i <= 3; i++){
for(int j = 1; j <= 3; j++){
t[i][j] = tbl[i][j][y] - tbl[i][j][x - 1];
}
}
long long ans = 0, tmp;
tmp = min(t[1][2], t[2][1]);
ans += tmp, t[1][2] -= tmp, t[2][1] -= tmp;
tmp = min(t[1][3], t[3][1]);
ans += tmp;
tmp = min(t[2][3], t[3][2]);
ans += tmp;
return ans + (max(t[1][2], t[2][1])) * 2;
}