oj.uz

답안 #121578

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
121578 2019-06-26T19:37:15 Z zoooma13 Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
0 / 100
 500 ms 763224 KB 
#include <bits/stdc++.h>
using namespace std;

#define MAX_N 402

int n;
string s;
vector <int> pos[3];

int dp[3][MAX_N][MAX_N][MAX_N] ,root = -1;
int to_rch[3][MAX_N][MAX_N];
int solve(int t ,int p0=0 ,int p1=0 ,int p2=0){
    int i = p0+p1+p2;
    if(i == n)
        return 0;
    int&ret = (~t ? dp[t][p0][p1][p2] : root);
    if(~ret)
        return ret;
    ret = 1e9;

    auto st = vector<int>{p0 ,p1 ,p2};
    for(int nt=0; nt<3; nt++){
        if(t == nt)
            continue;
        if(st[nt] < pos[nt].size()){
            st[nt]++;
            ret = min(ret ,to_rch[nt][i][st[nt]-1]+solve(nt ,st[0] ,st[1] ,st[2]));
            st[nt]--;
        }
    }
    return ret;
}

int main()
{
    cin >> n;
    cin >> s;

    for(int i=0; i<n; i++){
        if(s[i] == 'R') pos[0].push_back(i);
        if(s[i] == 'G') pos[1].push_back(i);
        if(s[i] == 'Y') pos[2].push_back(i);
    }
    for(int t=0; t<3; t++){
        for(int i=0; i<pos[t].size(); i++)
        for(int o=i; o<n; o++)
            to_rch[t][o][i] = max(pos[t][i]-o ,0);
    }

    memset(dp ,-1 ,sizeof dp);
    int ans = solve(-1);
    cout << (ans == 1e9 ? -1 : ans) << endl;
}

Compilation message

joi2019_ho_t3.cpp: In function 'int solve(int, int, int, int)':
joi2019_ho_t3.cpp:25:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(st[nt] < pos[nt].size()){
joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<pos[t].size(); i++)
                      ~^~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 907 ms 763224 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 907 ms 763224 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 575 ms 763208 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 907 ms 763224 KB Time limit exceeded
2 Halted 0 ms 0 KB -