oj.uz

Submission #52917

# Submission time Handle Problem Language Result Execution time Memory
52917 2018-06-27T07:24:16 Z 0^0(#1376) Popeala (CEOI16_popeala) C++11
26 / 100
 2000 ms 15488 KB 
#include <bits/stdc++.h>
using namespace std;
int n, t, s;
const int inf = 2e9 + 5;
struct SGT {
	int tree[1 << 16];
	int sz = 1 << 15;
	void update(int idx, int val) {
		idx += sz;
		tree[idx] = val;
		idx /= 2;
		while (idx) {
			tree[idx] = min(tree[idx * 2], tree[idx * 2 + 1]);
			idx /= 2;
		}
	}
	int query(int le, int ri) {
		le += sz;
		ri += sz;
		int ret = inf;
		while (le <= ri) {
			if (le & 1)ret = min(ret, tree[le++]);
			if (!(ri & 1))ret = min(ret, tree[ri--]);
			le /= 2;
			ri /= 2;
		}
		return ret;
	}
};
int p[20005];
int r[55][20005];
int sum[20005];
vector<int> q[20005];
SGT dp[2][55];
void solve(int k) {
	int now = k & 1;
	int pre = 1 - now;
	for (int i = 0; i <= n; i++)dp[now][i].update(0, inf);
	for (int i = 1; i <= t; i++) {
		int c = n;
		int val = inf;
		int ri = i;
		int px = 0;
		for (auto x : q[i]) {
			int le = ri - (x - px) + 1;
			if (le <= ri) {
				int temp = dp[pre][c].query(le - 1, ri - 1);
				if (temp != inf) val = min(val, temp + c * sum[i]);
			}
			c--;
			ri = le - 1;
			px = x;
		}
		if (1 <= ri) {
			int temp = dp[pre][c].query(0, ri - 1);
			if (temp != inf) val = min(val, temp + c * sum[i]);
		}
		for (int j = 0; j <= n; j++)
			dp[now][j].update(i, val - j * sum[i]);
		if (i == t) printf("%d\n", val);
	}
}
int main() {
	scanf("%d%d%d", &n, &t, &s);
	for (int i = 1; i <= t; i++) {
		scanf("%d", &p[i]);
		sum[i] = sum[i - 1] + p[i];
	}
	for (int i = 0; i < n; i++) {
		int cnt = 0;
		for (int j = 1; j <= t; j++) {
			scanf("%1d", &r[i][j]);
			if (r[i][j])cnt++;
			else cnt = 0;
			q[j].push_back(cnt);
		}
	}
	for (int i = 1; i <= t; i++)
		sort(q[i].begin(), q[i].end());
	for (int i = 1; i <= s; i++)
		solve(i);
	return 0;
}

Compilation message

popeala.cpp: In function 'int main()':
popeala.cpp:64:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d", &n, &t, &s);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
popeala.cpp:66:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &p[i]);
   ~~~~~^~~~~~~~~~~~~
popeala.cpp:72:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%1d", &r[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1400 KB Output is correct
2 Correct 6 ms 3172 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 156 ms 5296 KB Output is correct
2 Correct 133 ms 5296 KB Output is correct
3 Correct 150 ms 5372 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 565 ms 7588 KB Output is correct
2 Correct 757 ms 8944 KB Output is correct
3 Correct 1077 ms 9832 KB Output is correct

Subtask #4
0 / 74.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1400 KB Output is correct
2 Correct 6 ms 3172 KB Output is correct
3 Correct 156 ms 5296 KB Output is correct
4 Correct 133 ms 5296 KB Output is correct
5 Correct 150 ms 5372 KB Output is correct
6 Correct 565 ms 7588 KB Output is correct
7 Correct 757 ms 8944 KB Output is correct
8 Correct 1077 ms 9832 KB Output is correct
9 Correct 1818 ms 13444 KB Output is correct
10 Execution timed out 2043 ms 15488 KB Time limit exceeded
11 Halted 0 ms 0 KB -