Submission #371452

#	Time	Username	Problem	Language	Result	Execution time	Memory
371452		maomao90	Orchard (NOI14_orchard)	C++14	20 / 25	225 ms	262148 KiB

orchard

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

#define mnto(x, y) x = min(x, (__typeof__(x)) y)
#define mxto(x, y) x = max(x, (__typeof__(x)) y)
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb emplace_back
typedef vector<int> vi;
typedef vector<ii> vii;

#define INF 1000000005
#define LINF 1000000000000000005
#define MOD 1000000007
#define MAXN 155
#define MAXM 1000005

int n, m;
int cols[MAXN][MAXM];
int ans;

int sum(int c, int t, int b) {
	return cols[b][c] - cols[t - 1][c];
}

int main() {
	scanf("%d%d", &n, &m);
	REP (i, 1, n + 1) {
		REP (j, 1, m + 1) {
			scanf("%d", &cols[i][j]);
			ans += cols[i][j];
			cols[i][j] += cols[i - 1][j];
		}
	}
	vector<vector<vector<int>>> dp(n + 5, vector<vector<int>>(n + 5, vector<int>(m + 5, 0)));
	int sub = INF;
	REP (i, 1, n + 1) {
		REP (j, i, n + 1) {
			REP (k, 1, m + 1) {
				dp[i][j][k] = min(dp[i][j][k - 1], 0) - 2 * sum(k, i, j) + (j - i + 1);
				mnto(sub, dp[i][j][k]);
			}
		}
	}
	ans += sub;
	printf("%d\n", ans);
	return 0;
}

/*

5 7
0 0 1 0 0 1 0
0 1 1 1 1 1 0
0 1 1 0 0 1 0
0 1 1 1 1 1 0
0 0 1 0 0 1 0

*/

Compilation message (stderr)

orchard.cpp: In function 'int main()':
orchard.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
orchard.cpp:40:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |    scanf("%d", &cols[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~~~~

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