oj.uz

Submission #233548

# Submission time Handle Problem Language Result Execution time Memory
233548 2020-05-20T21:35:58 Z alishahali1382 Strah (COCI18_strah) C++14
77 / 110
 164 ms 20168 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O2")
#pragma GCC optimize ("unroll-loops")
//#pragma GCC optimize("no-stack-protector,fast-math")

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<pii, int> piii;
typedef pair<ll, ll> pll;
#define debug(x) cerr<<#x<<'='<<(x)<<endl;
#define debugp(x) cerr<<#x<<"= {"<<(x.first)<<", "<<(x.second)<<"}"<<endl;
#define debug2(x, y) cerr<<"{"<<#x<<", "<<#y<<"} = {"<<(x)<<", "<<(y)<<"}"<<endl;
#define debugv(v) {cerr<<#v<<" : ";for (auto x:v) cerr<<x<<' ';cerr<<endl;}
#define all(x) x.begin(), x.end()
#define pb push_back
#define kill(x) return cout<<x<<'\n', 0;

const ld eps=1e-7;
const int inf=1000000010;
const ll INF=10000000000000010LL;
const int mod=1000000007;
const int N=2010;

ll n, m, k, u, v, x, y, t, a, b, ans;
int A[N][N];
int L[N], R[N];
ll sum[N];

ll C2(ll x){
	return x*(x+1)/2;
}

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	cin>>n>>m;
	for (int i=1; i<=n; i++) for (int j=1; j<=m; j++){
		char ch;
		cin>>ch;
		A[i][j]=(A[i-1][j]+1)*(ch=='.');
	}
	for (int i=1; i<=n; i++) for (int j=1; j<=i; j++) sum[i]+=j*(i-j+1);
	for (int i=1; i<=n; i++){
		for (int j=1; j<=m; j++) for (L[j]=j-1; L[j] && A[i][L[j]]>=A[i][j]; L[j]=L[L[j]]);
		for (int j=m; j; j--) for (R[j]=j+1; R[j]<=m && A[i][R[j]]>A[i][j]; R[j]=R[R[j]]);
		for (int j=1; j<=m; j++) ans+=1ll*C2(A[i][j])*(sum[R[j]-L[j]-1]-sum[R[j]-j-1]-sum[j-L[j]-1]);
	}
	cout<<ans<<'\n';
	
	return 0;
}
/*
2 3
.#.
..#

*/

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Incorrect 5 ms 384 KB Output isn't correct

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 2048 KB Output is correct
2 Correct 9 ms 2048 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 2048 KB Output is correct
2 Correct 9 ms 2048 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2048 KB Output is correct
2 Correct 8 ms 2048 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 8056 KB Output is correct
2 Correct 102 ms 14584 KB Output is correct

Subtask #7
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 102 ms 13176 KB Output is correct
2 Correct 156 ms 19320 KB Output is correct

Subtask #8
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 67 ms 8572 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 8960 KB Output is correct
2 Correct 109 ms 18092 KB Output is correct

Subtask #10
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 142 ms 19960 KB Output is correct
2 Correct 164 ms 20168 KB Output is correct