Submission #950676

#	Time	Username	Problem	Language	Result	Execution time	Memory
950676		Irate	Orchard (NOI14_orchard)	C++14	16 / 25	1065 ms	262144 KiB

orchard

#include<bits/stdc++.h>
using namespace std;
const int mxN = 155;
const int mxM = 1e6 + 5;
int grid[mxN][mxM], pref[mxN][mxM];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    for(int i = 1;i <= n;++i){
        for(int j = 1;j <= m;++j){
            cin >> grid[i][j];
            pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1] + grid[i][j];
        }
    }
    int mn = 1e9;
    for(int k = 1;k <= n;++k){
        for(int i = 1;i + k - 1 <= n;++i){
            set<int>s;
            s.insert(-1);
            for(int j = 1;j <= m;++j){
                auto itr = s.begin();
                int sum = pref[i + k - 1][j] - pref[i - 1][j];
                mn = min(mn, j * k - 2 * sum + pref[n][m] + k + *itr);
                s.insert(2 * (pref[i + k - 1][j] - pref[i - 1][j]) - k * (j + 1));
            }
        }
    }
    cout << mn << '\n';
}

• Subtask 1: 4 / 4
• Subtask 2: 4 / 4
• Subtask 3: 5 / 5
• Subtask 4: 3 / 3
• Subtask 5: 0 / 4
• Subtask 6: 0 / 5