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Submission #1000248

# Submission time Handle Problem Language Result Execution time Memory
1000248 2024-06-17T07:12:35 Z biximo Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
0 / 100
 487 ms 1048576 KB 
#include <bits/stdc++.h>
#define N 405
#define INF 2000000000
using namespace std;
int n,dp[N][N][N][4], rs[N], gs[N], ys[N];
string s;
int cost(int r, int g, int y, int i) {
	return abs(rs[i]-r)+abs(gs[i]-g)+abs(ys[i]-y);
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
   	cin >> n >> s;
   	for(int i = 1; i <= n; i ++) {
   		rs[i] = rs[i-1]+(s[i-1]=='R');
   		gs[i] = gs[i-1]+(s[i-1]=='G');
   		ys[i] = ys[i-1]+(s[i-1]=='Y');
   	}
   	for(auto&i: dp) for(auto&j: i) for(auto&k: j) for(auto&l: k) l = INF;
   	dp[0][0][0][0] = 0;
   	for(int i = 0; i < n; i ++) {
   		for(int r = 0; r <= i && r <= rs[i]; r ++) {
   			for(int g = 0; r+g <= i && g <= gs[n]; g ++) {
   				int y = i-r-g;
   				if(y > ys[n]) continue;
   				for(int t = (i!=0); t <= 3; t ++) {
	   				if(t != 1)
	   				dp[i+1][r+1][g][1] = min(dp[i+1][r+1][g][1],dp[i][r][g][t]+cost(r+1,g,y,i+1));
	   				if(t != 2)
	   				dp[i+1][r][g+1][2] = min(dp[i+1][r][g+1][2],dp[i][r][g][t]+cost(r,g+1,y,i+1));
	   				if(t != 3)
	   				dp[i+1][r][g][3] = min(dp[i+1][r][g][3],dp[i][r][g][t]+cost(r,g,y+1,i+1));
   				}
   			}
   		}
   	}
   	int res = min({dp[n][rs[n]][gs[n]][1],dp[n][rs[n]][gs[n]][2],dp[n][rs[n]][gs[n]][3]})/2;
   	assert(res%2==0);
   	if(res == INF/2) cout << -1;
   	else cout << res;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 487 ms 1040292 KB Output is correct
2 Correct 404 ms 1040212 KB Output is correct
3 Correct 396 ms 1040384 KB Output is correct
4 Incorrect 401 ms 1040216 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 487 ms 1040292 KB Output is correct
2 Correct 404 ms 1040212 KB Output is correct
3 Correct 396 ms 1040384 KB Output is correct
4 Incorrect 401 ms 1040216 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 413 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 487 ms 1040292 KB Output is correct
2 Correct 404 ms 1040212 KB Output is correct
3 Correct 396 ms 1040384 KB Output is correct
4 Incorrect 401 ms 1040216 KB Output isn't correct
5 Halted 0 ms 0 KB -