#include<bits/stdc++.h>
using namespace std;
vector<int> wut[3];
int dp[400][401][401][3];
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int n;
cin >> n;
string s;
cin >> s;
vector<int> haha(n);
for(int i = 0; i < n; i++) {
if(s[i] == 'R') {
haha[i] = 0;
}
else if(s[i] == 'G') {
haha[i] = 1;
}
else {
haha[i] = 2;
}
wut[haha[i]].push_back(i);
}
for(int i = 0; i < n; i++) {
for(int j = 0; j <= wut[0].size(); j++) {
for(int k = 0; k <= wut[1].size(); k++) {
dp[i][j][k][0] = 1e9;
dp[i][j][k][1] = 1e9;
dp[i][j][k][2] = 1e9;
if(j+k > i+1 || i+1-j-k > wut[2].size()) {
continue;
}
int b = i+1-j-k;
if(i > 0) {
if(j != 0) {
dp[i][j][k][0] = min(dp[i][j][k][0],min(dp[i-1][j-1][k][1],dp[i-1][j-1][k][2])+abs(i-wut[0][j-1]));
}
if(k != 0) {
dp[i][j][k][1] = min(dp[i][j][k][1],min(dp[i-1][j][k-1][0],dp[i-1][j][k-1][2])+abs(i-wut[1][k-1]));
}
if(b != 0) {
dp[i][j][k][2] = min(dp[i][j][k][2],min(dp[i-1][j][k][0],dp[i-1][j][k][1])+abs(i-wut[2][b-1]));
}
}
else {
if(j > 0) {
dp[i][j][k][0] = abs(i-wut[0][0]);
}
if(k > 0) {
dp[i][j][k][1] = abs(i-wut[1][0]);
}
if(b > 0) {
dp[i][j][k][2] = abs(i-wut[2][0]);
}
}
}
}
}
int ans = dp[n-1][wut[0].size()][wut[1].size()][0];
ans = min(ans,dp[n-1][wut[0].size()][wut[1].size()][1]);
ans = min(ans,dp[n-1][wut[0].size()][wut[1].size()][2]);
if(ans >= (int)1e9) {
cout << -1;
}
else {
cout << ans/2;
}
return 0;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
31 | for(int j = 0; j <= wut[0].size(); j++) {
| ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:32:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | for(int k = 0; k <= wut[1].size(); k++) {
| ~~^~~~~~~~~~~~~~~~
joi2019_ho_t3.cpp:36:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
36 | if(j+k > i+1 || i+1-j-k > wut[2].size()) {
| ~~~~~~~~^~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
4560 KB |
Output is correct |
4 |
Correct |
2 ms |
18780 KB |
Output is correct |
5 |
Correct |
4 ms |
26972 KB |
Output is correct |
6 |
Correct |
3 ms |
26972 KB |
Output is correct |
7 |
Correct |
3 ms |
26972 KB |
Output is correct |
8 |
Correct |
3 ms |
27144 KB |
Output is correct |
9 |
Correct |
4 ms |
26972 KB |
Output is correct |
10 |
Correct |
3 ms |
26972 KB |
Output is correct |
11 |
Incorrect |
3 ms |
26972 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
4560 KB |
Output is correct |
4 |
Correct |
2 ms |
18780 KB |
Output is correct |
5 |
Correct |
4 ms |
26972 KB |
Output is correct |
6 |
Correct |
3 ms |
26972 KB |
Output is correct |
7 |
Correct |
3 ms |
26972 KB |
Output is correct |
8 |
Correct |
3 ms |
27144 KB |
Output is correct |
9 |
Correct |
4 ms |
26972 KB |
Output is correct |
10 |
Correct |
3 ms |
26972 KB |
Output is correct |
11 |
Incorrect |
3 ms |
26972 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
199 ms |
754488 KB |
Output is correct |
3 |
Correct |
98 ms |
753624 KB |
Output is correct |
4 |
Correct |
97 ms |
754824 KB |
Output is correct |
5 |
Correct |
92 ms |
754516 KB |
Output is correct |
6 |
Correct |
95 ms |
754540 KB |
Output is correct |
7 |
Correct |
99 ms |
753488 KB |
Output is correct |
8 |
Correct |
100 ms |
753496 KB |
Output is correct |
9 |
Correct |
100 ms |
751652 KB |
Output is correct |
10 |
Correct |
97 ms |
754848 KB |
Output is correct |
11 |
Correct |
98 ms |
754512 KB |
Output is correct |
12 |
Correct |
41 ms |
388436 KB |
Output is correct |
13 |
Correct |
58 ms |
517804 KB |
Output is correct |
14 |
Correct |
73 ms |
624208 KB |
Output is correct |
15 |
Correct |
92 ms |
754420 KB |
Output is correct |
16 |
Correct |
98 ms |
754516 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
1 ms |
4560 KB |
Output is correct |
4 |
Correct |
2 ms |
18780 KB |
Output is correct |
5 |
Correct |
4 ms |
26972 KB |
Output is correct |
6 |
Correct |
3 ms |
26972 KB |
Output is correct |
7 |
Correct |
3 ms |
26972 KB |
Output is correct |
8 |
Correct |
3 ms |
27144 KB |
Output is correct |
9 |
Correct |
4 ms |
26972 KB |
Output is correct |
10 |
Correct |
3 ms |
26972 KB |
Output is correct |
11 |
Incorrect |
3 ms |
26972 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |