oj.uz

Submission #204243

# Submission time Handle Problem Language Result Execution time Memory
204243 2020-02-25T09:13:56 Z bash Growing Vegetable is Fun 3 (JOI19_ho_t3) C++17
100 / 100
 181 ms 197240 KB 
/**
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*/
#include <cstring>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
 
#define F first
#define S second
#define endl '\n'
#define deb(x) cout<<#x<<' '<<x<<endl;
#define pb push_back
 using namespace __gnu_pbds;
using namespace std;

typedef tree<
int,
null_type,
less<int>,
rb_tree_tag,
tree_order_statistics_node_update>
ordered_set;
/*
#ifdef IZI_KATKA
#define int __int64_t
#else
#define int __int64
#endif
*/
const long long MOD = 1e9 + 7;
const long long MAXN = 1e6 + 1;

typedef long long ll;

#define pii pair<int,int>
 
long long readInt() {
    bool minus1 = false;
    long long result = 0;
    char ch;
    ch = getchar();
    while (true) {
        if (ch == '-') break;
        if (ch >= '0' && ch <= '9') break;
        ch = getchar();
    }
    if (ch == '-') minus1 = true; else result = ch-'0';
    while (true) {
        ch = getchar();
        if (ch < '0' || ch > '9') break;
        result = result*10 + (ch - '0');
    }
    if (minus1)
        return -result;
    else
        return result;
}

const int maxn = 411;

int a[maxn];

int dp[3][maxn][maxn][maxn];
int pref[3][maxn];
int qtd[maxn];
int pos[3][maxn];

int n;

int main() {
	#ifdef IZI_KATKA
	assert(freopen("input", "r", stdin));
    assert(freopen("output", "w", stdout));
    #endif
    int n = readInt();
    string s;
    cin >> s;
	for (int i = 0; i < s.size(); i++) {
		if (s[i] == 'R') {
			a[i + 1] = 0;
			qtd[0]++;
			pos[0][qtd[0]] = i + 1;	
		} else if (s[i] == 'G') {
			a[i + 1] = 1;
			qtd[1] ++;
			pos[1][qtd[1]] = i + 1;			
		} else if (s[i] == 'Y') {
			a[i + 1] = 2;
			qtd[2] ++;
			pos[2][qtd[2]] = i + 1;		
		}
	}
	for (int t = 0; t < 3; t++) {
		for (int i = 1; i <= n; i++) {
			pref[t][i] = pref[t][i - 1];
			if (a[i] == t) {
				pref[t][i]++;
			}
		}            
	}
	for (int i = 0; i < 3; i++) {
		for (int r = 0; r <= qtd[0]; r++) {
			for (int g = 0; g <= qtd[1]; g++) {
				for (int y = 0; y <= qtd[2]; y++) {
					dp[i][r][g][y] = MOD;			
				}
			}
		}
	}
	for (int i = 0; i < 3; i++) {
		dp[i][0][0][0] = 0;
	}
	for (int r = 0; r <= qtd[0]; r++) {
		for (int g = 0; g <= qtd[1]; g++) {
			for (int y = 0; y <= qtd[2]; y++) {
				for (int pre = 0; pre < 3; pre++) {
					for (int at = 0; at < 3; at++) {
						if (at == pre) continue;
						if ((at == 0 && r == qtd[0]) || (at == 1 && g == qtd[1]) || (at == 2 && qtd[2] == y)) continue;
						int ans = 0;
						int p1, p2, p3, dif;
						/// p1 = pos of previous
						/// p2 = pos of current
						/// p3 = pos of other
						/// dif = color of other
						dif = 3 - (pre + at);
						if (pre == 0) {
							p1 = pos[0][r];	
							if (at == 1) {
								p2 = pos[1][g + 1], p3 = pos[dif][y];
							} else {
								p2 = pos[2][y + 1], p3 = pos[dif][g];
							}
						} else if (pre == 1) {
							p1 = pos[1][g];
							if (at == 0) {
								p2 = pos[0][r + 1], p3 = pos[dif][y];
							} else {
								p2 = pos[2][y + 1], p3 = pos[dif][r];								
							}			
						} else if (pre == 2) {
							p1 = pos[2][y];						
							if (at == 0) {
								p2 = pos[0][r + 1], p3 = pos[dif][g];
							} else {
								p2 = pos[1][g + 1], p3 = pos[dif][r];
							}
						}
						ans += max(0, pref[pre][p2]-pref[pre][p1]);
						ans += max(0, pref[dif][p2]-pref[dif][p3]);
						ans += dp[pre][r][g][y];
						if (at == 0)
							dp[at][r+1][g][y] = min(dp[at][r+1][g][y], ans);
						else if (at == 1)
							dp[at][r][g+1][y] = min(dp[at][r][g+1][y], ans);
						else
							dp[at][r][g][y+1] = min(dp[at][r][g][y+1], ans);
					}
				}
			}
		}
	}
	int ans = MOD;
	for (int i = 0; i < 3; i++) {
		ans = min(ans, dp[i][qtd[0]][qtd[1]][qtd[2]]);
	}
	if (ans == MOD) {
		cout << -1;
	} else {
		cout << ans;
	}
	return 0;
}

Compilation message

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); i++) {
                  ~~^~~~~~~~~~
joi2019_ho_t3.cpp:170:47: warning: 'p3' may be used uninitialized in this function [-Wmaybe-uninitialized]
       ans += max(0, pref[dif][p2]-pref[dif][p3]);
                                   ~~~~~~~~~~~~^
joi2019_ho_t3.cpp:170:33: warning: 'p2' may be used uninitialized in this function [-Wmaybe-uninitialized]
       ans += max(0, pref[dif][p2]-pref[dif][p3]);
                     ~~~~~~~~~~~~^
joi2019_ho_t3.cpp:169:47: warning: 'p1' may be used uninitialized in this function [-Wmaybe-uninitialized]
       ans += max(0, pref[pre][p2]-pref[pre][p1]);
                                   ~~~~~~~~~~~~^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 760 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 632 KB Output is correct
12 Correct 5 ms 636 KB Output is correct
13 Correct 5 ms 508 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 632 KB Output is correct
17 Correct 5 ms 376 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 760 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 632 KB Output is correct
12 Correct 5 ms 636 KB Output is correct
13 Correct 5 ms 508 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 632 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 2808 KB Output is correct
19 Correct 6 ms 2296 KB Output is correct
20 Correct 7 ms 2680 KB Output is correct
21 Correct 7 ms 2936 KB Output is correct
22 Correct 6 ms 2040 KB Output is correct
23 Correct 7 ms 2552 KB Output is correct
24 Correct 6 ms 1912 KB Output is correct
25 Correct 7 ms 4980 KB Output is correct
26 Correct 7 ms 5240 KB Output is correct
27 Correct 7 ms 3832 KB Output is correct
28 Correct 6 ms 2808 KB Output is correct
29 Correct 6 ms 2680 KB Output is correct
30 Correct 7 ms 2680 KB Output is correct
31 Correct 6 ms 2424 KB Output is correct
32 Correct 6 ms 2808 KB Output is correct
33 Correct 8 ms 4728 KB Output is correct
34 Correct 8 ms 4344 KB Output is correct
35 Correct 7 ms 3320 KB Output is correct
36 Correct 6 ms 2296 KB Output is correct
37 Correct 6 ms 2040 KB Output is correct
38 Correct 6 ms 2552 KB Output is correct
39 Correct 6 ms 2808 KB Output is correct
40 Correct 5 ms 380 KB Output is correct
41 Correct 6 ms 2680 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 103 ms 197112 KB Output is correct
3 Correct 97 ms 196216 KB Output is correct
4 Correct 98 ms 197172 KB Output is correct
5 Correct 98 ms 197088 KB Output is correct
6 Correct 96 ms 197112 KB Output is correct
7 Correct 97 ms 196216 KB Output is correct
8 Correct 95 ms 196216 KB Output is correct
9 Correct 94 ms 195192 KB Output is correct
10 Correct 97 ms 197112 KB Output is correct
11 Correct 95 ms 197112 KB Output is correct
12 Correct 31 ms 53624 KB Output is correct
13 Correct 51 ms 93560 KB Output is correct
14 Correct 70 ms 135032 KB Output is correct
15 Correct 104 ms 197240 KB Output is correct
16 Correct 98 ms 197112 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 760 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 632 KB Output is correct
12 Correct 5 ms 636 KB Output is correct
13 Correct 5 ms 508 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 504 KB Output is correct
16 Correct 5 ms 632 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 6 ms 2808 KB Output is correct
19 Correct 6 ms 2296 KB Output is correct
20 Correct 7 ms 2680 KB Output is correct
21 Correct 7 ms 2936 KB Output is correct
22 Correct 6 ms 2040 KB Output is correct
23 Correct 7 ms 2552 KB Output is correct
24 Correct 6 ms 1912 KB Output is correct
25 Correct 7 ms 4980 KB Output is correct
26 Correct 7 ms 5240 KB Output is correct
27 Correct 7 ms 3832 KB Output is correct
28 Correct 6 ms 2808 KB Output is correct
29 Correct 6 ms 2680 KB Output is correct
30 Correct 7 ms 2680 KB Output is correct
31 Correct 6 ms 2424 KB Output is correct
32 Correct 6 ms 2808 KB Output is correct
33 Correct 8 ms 4728 KB Output is correct
34 Correct 8 ms 4344 KB Output is correct
35 Correct 7 ms 3320 KB Output is correct
36 Correct 6 ms 2296 KB Output is correct
37 Correct 6 ms 2040 KB Output is correct
38 Correct 6 ms 2552 KB Output is correct
39 Correct 6 ms 2808 KB Output is correct
40 Correct 5 ms 380 KB Output is correct
41 Correct 6 ms 2680 KB Output is correct
42 Correct 5 ms 376 KB Output is correct
43 Correct 103 ms 197112 KB Output is correct
44 Correct 97 ms 196216 KB Output is correct
45 Correct 98 ms 197172 KB Output is correct
46 Correct 98 ms 197088 KB Output is correct
47 Correct 96 ms 197112 KB Output is correct
48 Correct 97 ms 196216 KB Output is correct
49 Correct 95 ms 196216 KB Output is correct
50 Correct 94 ms 195192 KB Output is correct
51 Correct 97 ms 197112 KB Output is correct
52 Correct 95 ms 197112 KB Output is correct
53 Correct 31 ms 53624 KB Output is correct
54 Correct 51 ms 93560 KB Output is correct
55 Correct 70 ms 135032 KB Output is correct
56 Correct 104 ms 197240 KB Output is correct
57 Correct 98 ms 197112 KB Output is correct
58 Correct 159 ms 78328 KB Output is correct
59 Correct 175 ms 99264 KB Output is correct
60 Correct 169 ms 90232 KB Output is correct
61 Correct 165 ms 87160 KB Output is correct
62 Correct 103 ms 192248 KB Output is correct
63 Correct 117 ms 189432 KB Output is correct
64 Correct 147 ms 165496 KB Output is correct
65 Correct 156 ms 143992 KB Output is correct
66 Correct 161 ms 88440 KB Output is correct
67 Correct 164 ms 84984 KB Output is correct
68 Correct 165 ms 91128 KB Output is correct
69 Correct 171 ms 87900 KB Output is correct
70 Correct 181 ms 95096 KB Output is correct
71 Correct 174 ms 86520 KB Output is correct
72 Correct 61 ms 44664 KB Output is correct
73 Correct 14 ms 2936 KB Output is correct