Submission #296895

#	Time	Username	Problem	Language	Result	Execution time	Memory
296895		HynDuf	Strah (COCI18_strah)	C++11	110 / 110	122 ms	4352 KiB

strah

#include <bits/stdc++.h>

#define task "S"
#define all(v) (v).begin(), (v).end()
#define rep(i, l, r) for (int i = (l); i <= (r); ++i)
#define Rep(i, r, l) for (int i = (r); i >= (l); --i)
#define DB(X) { cerr << #X << " = " << (X) << '\n'; }
#define DB1(A, _) { cerr << #A << "[" << _ << "] = " << (A[_]) << '\n'; }
#define DB2(A, _, __) { cerr << #A << "[" << _ << "][" << __ << "] = " << (A[_][__]) << '\n'; }
#define DB3(A, _, __, ___) { cerr << #A << "[" << _ << "][" << __ << "][" << ___ << "] = " << (A[_][__][___]) << '\n'; }
#define PR(A, l, r) { cerr << '\n'; rep(_, l, r) DB1(A, _); cerr << '\n';}
#define SZ(x) ((int)(x).size())
#define pb push_back
#define eb emplace_back
#define pf push_front
#define F first
#define S second
#define by(x) [](const auto& a, const auto& b) { return a.x < b.x; } // sort(arr, arr + N, by(a));
#define next ___next
#define prev ___prev
#define y1 ___y1
#define left ___left
#define right ___right
#define y0 ___y0
#define div ___div
#define j0 ___j0
#define jn ___jn

using ll = long long;
using ld = long double;
using ull = unsigned long long;
using namespace std;
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<ll> vl;
const int N = 2002;
int n, m, h[N], D[N], top, l[N];
string s[N];
int main()
{
#ifdef HynDuf
    freopen(task".in", "r", stdin);
    //freopen(task".out", "w", stdout);
#else
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
#endif
    cin >> n >> m;
    rep(i, 1, n)
    {
        cin >> s[i];
        s[i] = '0' + s[i];
    }
    ll ans = 0;
    rep(i, 1, n)
    {
        rep(j, 1, m) h[j] = (s[i][j] == '.' ? h[j] + 1 : 0);
        top = 0;
        D[0] = 0;
        rep(j, 1, m)
        {
            while (top && h[D[top]] > h[j]) top--;
            l[j] = j - D[top];
            D[++top] = j;
        }
        top = 0;
        D[0] = m + 1;
        Rep(j, m, 1)
        {
            while (top && h[D[top]] >= h[j]) top--;
            int r = D[top] - j;
            D[++top] = j;
            ans += (1LL * r * (l[j] - 1) * l[j] / 2 + 1LL * l[j] * r * (r + 1) / 2) * h[j] * (h[j] + 1) / 2;
        }

    }
    cout << ans;
    return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 11 / 11
• Subtask 6: 11 / 11
• Subtask 7: 11 / 11
• Subtask 8: 11 / 11
• Subtask 9: 11 / 11
• Subtask 10: 11 / 11