Submission #1115123

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115123		duytuandao21	Bob (COCI14_bob)	C++17	120 / 120	940 ms	55900 KiB

bob

#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 2e5 + 7;
const int inf = 1e9 + 7;
typedef pair<int, int> pii;

int n, m;
int a[2000][2000], b[2000][2000], c[2000][2000];
int bit[2000][2000];

int get(int j, int x, int y) {
    int ans = 0;
    int mVal = inf;
    for (int i = x; i <= y; i++) {
        mVal = min(mVal, b[i][j]);
        ans += mVal;
    }
    return ans + (-j + 1) * (y - x + 1);
}
signed main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for (int i = 1; i <= n; i++) 
        for (int j = 1; j <= m; j++) cin >> a[i][j];
    
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            for (int k = j; k <= m + 1; k++) {
                if (a[i][k] != a[i][j]) {
                    b[i][j] = k - 1;
                    break;
                }
            }
        }
    }
    for (int j = 1; j <= m; j++) {
        for (int i = 1; i <= n; i++) {
            for (int k = i; k <= n + 1; k++) {
                if (a[k][j] != a[i][j]) {
                    c[i][j] = k - 1;
                    break;
                }
            }
        }
    }

    int res = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            // int minCol = inf;
            // for (int k = i; k <= n; k++) {
            //     if (a[k][j] != a[i][j]) break;
            //     minCol = min(minCol, b[k][j]);
            //     res += minCol - j + 1;
            // }
            res += get(j, i, c[i][j]);
        }
    }
    cout << res;
}

• Subtask 1: 12 / 12
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 12 / 12
• Subtask 6: 12 / 12
• Subtask 7: 12 / 12
• Subtask 8: 12 / 12
• Subtask 9: 12 / 12
• Subtask 10: 12 / 12