Submission #1111165

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111165		Ghulam_Junaid	Popeala (CEOI16_popeala)	C++17	26 / 100	2049 ms	9040 KiB

popeala

#include <bits/stdc++.h>
using namespace std;
 
const int T = 2e4 + 10;
const int N = 52;
const int S = 52;
 
int t, n, s, points[T], pref[T], dp[T][S];
int mat[N][T], perf_mat[N][T], maxl[N][T];
 
int good(int l, int r){
    int ans = 0;
    for (int i=1; i<=n; i++)
        ans += ((perf_mat[i][r] - perf_mat[i][l - 1]) == (r - l + 1));
    return ans;
}
 
int main(){
    cin >> n >> t >> s;
    for (int i=1; i<=t; i++)
        cin >> points[i], pref[i] = pref[i - 1] + points[i];
 
    for (int i=1; i<=n; i++){
        for (int j=1; j<=t; j++){
            char c;
            cin >> c;
            mat[i][j] = (c - '0');
            perf_mat[i][j] = mat[i][j] + perf_mat[i][j - 1];
        }
    }
 
    for (int l=1; l<=t; l++){
        int cnt = good(l, t);
        int summ = pref[t] - pref[l - 1];
        dp[l][1] = cnt * summ;
        // cout << l << " 1 : " << dp[l][1] << endl;
    }
 
    for (int i=1; i<=n; i++){
        maxl[i][t + 1] = t + 1;
        for (int j = t; j > 0; j--){
            maxl[i][j] = maxl[i][j + 1];
            if (!mat[i][j])
                maxl[i][j] = j;
        }
    }
 
    vector<int> inds;
    for (int subs = 2; subs <= s; subs++){
        for (int l = 1; l <= t; l++){
            if ((t - l + 1) < subs)
                continue;
 
            inds.clear();
            for (int i=1; i<=n; i++)
                inds.push_back(maxl[i][l]);
 
            sort(inds.begin(), inds.end());
            int p1 = 0;
 
            dp[l][subs] = 2e9;
            for (int r = l + 1; r <= t; r++){
                if ((t - r + 1) < (subs - 1)) continue;
                while (p1 < n && inds[p1] < r) p1++;
                dp[l][subs] = min(dp[l][subs], dp[r][subs - 1] + (n - p1) * (pref[r - 1] - pref[l - 1]));
            }
 
            // dp[l][subs] = dp[l + 1][subs - 1] + good(l, l) * points[l];
 
 
            // cout << "init = " << dp[l][subs] << endl;
 
            // int rem = n;
            // for (int x : inds){
            //     int r = x + 1;
            //     rem--;
            //     if ((t - r + 1) < (subs - 1))
            //         continue;
 
            //     dp[l][subs] = min(dp[l][subs], dp[r][subs - 1] + rem * (pref[r - 1] - pref[l - 1]));
            // }
 
            // cout << l << " " << subs << " : " << dp[l][subs] << endl;
        }
    }
 
    for (int i=1; i<=s; i++)
        cout << dp[1][i] << endl;
}

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 0 / 74