Submission #538321

#	Time	Username	Problem	Language	Result	Execution time	Memory
538321		siewjh	Popeala (CEOI16_popeala)	C++17	26 / 100	598 ms	5504 KiB

popeala

#include <bits/stdc++.h>
using namespace std;
const int inf = 1e9;
int pref[20'005];
bool ac[55][20'005];
int dp[55][20'005];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int ppl, cases, grp; cin >> ppl >> cases >> grp;
    pref[0] = 0;
    for (int i = 1; i <= cases; i++) {
        cin >> pref[i];
        pref[i] += pref[i - 1];
    }
    for (int i = 1; i <= ppl; i++){
        string str; cin >> str;
        for (int j = 1; j <= cases; j++) ac[i][j] = (str[j - 1] == '1');
    }
    for (int i = 0; i <= grp; i++)
        for (int j = 0; j <= cases; j++)
            dp[i][j] = inf;
    dp[0][0] = 0;
    for (int i = 1; i <= grp; i++){
        int best[55], last[55], fc[20'005];
        memset(best, 0, sizeof(best));
        memset(last, 0, sizeof(last));
        for (int j = 0; j <= cases; j++) fc[j] = ppl;
        for (int j = 1; j <= cases; j++){
            if (dp[i - 1][best[ppl]] + (pref[j] - pref[best[ppl]]) * fc[best[ppl] + 1] > dp[i - 1][j - 1] + (pref[j] - pref[j - 1]) * ppl) best[ppl] = j - 1;
            for (int p = 1; p <= ppl; p++){
                if (ac[p][j]) continue;
                for (int k = last[p] + 1; k <= j; k++) best[fc[k]] = 0;
                for (int k = last[p] + 1; k <= j; k++){
                    fc[k]--;
                    if (dp[i - 1][best[fc[k]]] + (pref[j] - pref[best[fc[k]]]) * fc[k] > dp[i - 1][k - 1] + (pref[j] - pref[k - 1]) * fc[k]) best[fc[k]] = k - 1;
                }
                last[p] = j;
            }
            if (j < i) continue;
            for (int p = 0; p <= ppl; p++) dp[i][j] = min(dp[i][j], dp[i - 1][best[p]] + (pref[j] - pref[best[p]]) * fc[best[p] + 1]);
        }
        cout << dp[i][cases] << '\n';
    }
    return 0;
}

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