結果

問題 No.655 E869120 and Good Triangles
ユーザー FF256grhy
提出日時 2018-02-24 01:40:28
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2,432 ms / 2,500 ms
コード長 3,661 bytes
コンパイル時間 1,867 ms
コンパイル使用メモリ 180,008 KB
実行使用メモリ 504,320 KB
最終ジャッジ日時 2024-10-10 02:51:32
合計ジャッジ時間 47,034 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 30
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
using namespace std;
typedef long long signed int LL;
typedef long long unsigned int LU;
#define incID(i, l, r) for(int i = (l) ; i < (r); i++)
#define incII(i, l, r) for(int i = (l) ; i <= (r); i++)
#define decID(i, l, r) for(int i = (r) - 1; i >= (l); i--)
#define decII(i, l, r) for(int i = (r) ; i >= (l); i--)
#define inc(i, n) incID(i, 0, n)
#define inc1(i, n) incII(i, 1, n)
#define dec(i, n) decID(i, 0, n)
#define dec1(i, n) decII(i, 1, n)
#define inII(v, l, r) ((l) <= (v) && (v) <= (r))
#define inID(v, l, r) ((l) <= (v) && (v) < (r))
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define FI first
#define SE second
#define PQ priority_queue
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
#define FOR(it, v) for(auto it = v.begin(); it != v.end(); ++it)
#define RFOR(it, v) for(auto it = v.rbegin(); it != v.rend(); ++it)
template<typename T> bool setmin(T & a, T b) { if(b < a) { a = b; return true; } else { return false; } }
template<typename T> bool setmax(T & a, T b) { if(b > a) { a = b; return true; } else { return false; } }
template<typename T> bool setmineq(T & a, T b) { if(b <= a) { a = b; return true; } else { return false; } }
template<typename T> bool setmaxeq(T & a, T b) { if(b >= a) { a = b; return true; } else { return false; } }
template<typename T> T gcd(T a, T b) { return (b == 0 ? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
// ---- ----
#define V2(T, x, y) (x, vector<T>(y, 0))
template<typename T> struct Sum2 {
typedef vector<vector<T>> A;
A s;
int X, Y;
Sum2() { X = Y = -1; }
Sum2(A & p) { init(p); }
void init(A & p) {
X = p.size();
Y = p[0].size();
s = A V2(T, X + 1, Y + 1);
inc1(x, X) { inc1(y, Y) { s[x][y] = p[x - 1][y - 1]; } }
inc1(x, X) { inc1(y, Y) { s[x][y] += s[x - 1][y ]; } }
inc1(x, X) { inc1(y, Y) { s[x][y] += s[x ][y - 1]; } }
}
T sum(int xl, int xh, int yl, int yh) { // [xl, xh) × [yl, yh)
assert(inII(xl, 0, X));
assert(inII(xh, 0, X + 1));
assert(inII(yl, 0, Y));
assert(inII(yh, 0, Y + 1));
assert(xl <= xh);
assert(yl <= yh);
return s[xh][yh] - s[xh][yl] - s[xl][yh] + s[xl][yl];
}
};
// ----
LL n, k, p, x[4000], y[4000];
Sum2<LL> sa, sb;
LL f(int i, int j, int l) {
return sb.sum(i, l, 0, j + n - i) - sa.sum(i, l, 0, j);
}
int main() {
cin >> n >> k >> p;
inc(i, k) { cin >> x[i] >> y[i]; x[i]--; y[i]--; }
vector<vector<LL>> a V2(LL, n, n);
vector<vector<LL>> b V2(LL, n, n);
inc(i, n) {
incII(j, 0, i) {
a[i][j] = n;
}
}
queue<pair<int, int>> q;
inc(i, k) {
a[x[i]][y[i]] = 0;
q.push(MP(x[i], y[i]));
}
while(! q.empty()) {
auto e = q.front(); q.pop();
int dx[6] = { +1, 0, -1, 0, +1, -1 };
int dy[6] = { 0, +1, 0, -1, +1, -1 };
inc(l, 6) {
int xx = e.FI + dx[l];
int yy = e.SE + dy[l];
if(inID(xx, 0, n) && inID(yy, 0, n)) { } else { continue; }
if(setmin(a[xx][yy], a[e.FI][e.SE] + 1)) { q.push(MP(xx, yy)); }
}
}
inc(i, n) {
incII(j, 0, i) {
b[i][j + (n - 1 - i)] = a[i][j];
}
}
/*
inc(i, n) {
inc(j, n) {
cout << a[i][j] << " ";
} cout << endl;
} cout << endl;
inc(i, n) {
inc(j, n) {
cout << b[i][j] << " ";
} cout << endl;
} cout << endl;
*/
sa.init(a);
sb.init(b);
/*
inc(i, n) {
incII(j, 0, i) {
incII(l, i + 1, n) { cout << f(i, j, l) << " "; } cout << endl;
}
}
cout << endl;
*/
LL ans = 0;
inc(i, n) {
incII(j, 0, i) {
int L = i, H = n + 1;
while(H - L > 1) {
int M = (L + H) / 2;
(f(i, j, M) < p ? L : H) = M;
}
ans += n - L;
}
}
cout << ans << endl;
return 0;
}
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