Submission #686539

#	Time	Username	Problem	Language	Result	Execution time	Memory
686539		JooDdae	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	15 / 100	70 ms	162800 KiB

joi2019_ho_t3

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const int INF = 1e9;

int n, dp[444][444][444][3];
string s;
vector<int> r, g, y;

int main(){
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> s;
    for(int i=0;i<n;i++) {
        if(s[i] == 'R') r.push_back(i);
        if(s[i] == 'G') g.push_back(i);
        if(s[i] == 'Y') y.push_back(i);
    }

    for(int i=0;i<=r.size();i++) for(int j=0;j<=g.size();j++) for(int k=0;k<=y.size();k++) {
        if(!i && !j && !k) continue;

        for(int l=0;l<3;l++) dp[i][j][k][l] = INF;
        if(i) dp[i][j][k][0] = min(dp[i-1][j][k][1], dp[i-1][j][k][2]) + abs(i+j+k-1 - r[i-1]);
        if(j) dp[i][j][k][1] = min(dp[i][j-1][k][0], dp[i][j-1][k][2]) + abs(i+j+k-1 - g[j-1]);
        if(k) dp[i][j][k][2] = min(dp[i][j][k-1][0], dp[i][j][k-1][1]) + abs(i+j+k-1 - y[k-1]);
    }

    int ans = *min_element(dp[r.size()][g.size()][y.size()], dp[r.size()][g.size()][y.size()]+3);
    cout << (ans >= INF ? -1 : ans/2);
}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<=r.size();i++) for(int j=0;j<=g.size();j++) for(int k=0;k<=y.size();k++) {
      |                 ~^~~~~~~~~~
joi2019_ho_t3.cpp:20:47: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<=r.size();i++) for(int j=0;j<=g.size();j++) for(int k=0;k<=y.size();k++) {
      |                                              ~^~~~~~~~~~
joi2019_ho_t3.cpp:20:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for(int i=0;i<=r.size();i++) for(int j=0;j<=g.size();j++) for(int k=0;k<=y.size();k++) {
      |                                                                           ~^~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 55
• Subtask 3: 15 / 15
• Subtask 4: 0 / 25