Submission #824643

#	Time	Username	Problem	Language	Result	Execution time	Memory
824643		exodus_	Orchard (NOI14_orchard)	C++14	25 / 25	327 ms	14004 KiB

orchard

#include<bits/stdc++.h>
#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
using namespace std;
int main() {
    FAST
    int r,c;
    int hitone=0;
    cin >> r >> c;
    int orch[r+1][c+1];
    for(int i=1; i<=r; i++) {
        for(int j=1; j<=c; j++) {
            cin >> orch[i][j];
            if(orch[i][j]==1) hitone++;
        }
    }
    int answer = hitone;
    int ter, sum;
    vector<int>co(c+1);
    for(int i=1; i<=r; i++) {
        for(int k=1; k<=c; k++) {
            co[k]=0;
        }
        for(int j=i; j<=r; j++) {
            sum = 0;
            ter = 0;
            for(int kol=1; kol<=c; kol++) {
                if(orch[j][kol]) {
                    sum-=1;
                } else {
                    sum+=1;
                }
                co[kol]+=sum;
                answer = min(answer, hitone+co[kol]-ter);
                ter = max(ter, co[kol]);
            }
        }
    }
    cout << answer << endl;
    return 0;
}

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