#include <bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define mp make_pair
#define pb push_back
#define bas(x) #x << ": " << x << " "
#define prarr(x, n) cout << #x << ": "; for (int qsd = 0; qsd < n; qsd++) cout << x[qsd] << " "; cout << endl;
#define prarrv(x) cout << #x << ": "; for (int qsd = 0; qsd < (int)x.size(); qsd++) cout << x[qsd] << " "; cout << endl;
#define ppair(x) "(" << x.first << ", " << x.second << ")"
#define inside sl<=l&&r<=sr
#define outside sr<l||r<sl
typedef long long ll;
string s;
int dist(string str){
string ana = s;
ll ans = 0;
int say = 0;
for (int i = str.size()-1; i >= 0; i--){
for (int j = ana.size()-1; j >= 0; j--){
if (ana[j] == str[i]){
ana[j] = 'x';
say++;
break;
} else if (ana[j] != 'x') ans++;
}
}
if (say != str.size()) return 1000000000;
return ans;
}
int dp[404][404][404][3];
vector<int> rler, gler, yler;
int f(int r, int g, int y, int last){
if (dp[r][g][y][last] != -1) return dp[r][g][y][last];
int minn = 1000000000;
if (r > 0 && last != 0){
int ret = f(r-1, g, y, 0);
ret += max(0, (int)s.size() - (r+g+y) - rler[rler.size()-r]);
minn = min(minn, ret);
}
if (g > 0 && last != 1){
int ret = f(r, g-1, y, 1);
ret += max(0, (int)s.size() - (r+g+y) - gler[gler.size()-g]);
minn = min(minn, ret);
}
if (y > 0 && last != 2){
int ret = f(r, g, y-1, 2);
ret += max(0, (int)s.size() - (r+g+y) - yler[yler.size()-y]);
minn = min(minn, ret);
}
if (g == 0 && r == 0 && y == 0){
return dp[r][g][y][last] = 0;
}
return dp[r][g][y][last] = minn;
}
int main(){
//freopen("in", "r", stdin);
//freopen("out", "w", stdout);
clock_t start = clock();
int n;
cin >> n;
cin >> s;
for (int i1 = 0; i1 < 404; i1++)
for (int i2 = 0; i2 < 404; i2++)
for (int i3 = 0; i3 < 404; i3++)
for (int i4 = 0; i4 < 3; i4++)
dp[i1][i2][i3][i4] = -1;
int r = 0, g = 0, y = 0;
for (int i = 0; i < n; i++){
r += s[i] == 'R';
g += s[i] == 'G';
y += s[i] == 'Y';
if (s[i] == 'R') rler.pb(i);
else if (s[i] == 'G') gler.pb(i);
else yler.pb(i);
}
//cout << f(0, 1, 0, 0) << endl;
//int ans = f(r, g, y, -1);
int ans = 0;
if (ans >= 1000000000) cout << -1 << endl;
else cout << ans << endl;
//cout << "bitti" << endl;
//cout << 1000.0*(clock()-start)/(double)CLOCKS_PER_SEC << "ms" << endl;
}
Compilation message
joi2019_ho_t3.cpp: In function 'int dist(std::__cxx11::string)':
joi2019_ho_t3.cpp:31:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (say != str.size()) return 1000000000;
~~~~^~~~~~~~~~~~~
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:66:10: warning: unused variable 'start' [-Wunused-variable]
clock_t start = clock();
^~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
664 ms |
774784 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
664 ms |
774784 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
671 ms |
774496 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
664 ms |
774784 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
