結果
問題 | No.655 E869120 and Good Triangles |
ユーザー |
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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 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 30 |
ソースコード
#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;}