제출 #85664

#제출 시각아이디문제언어결과실행 시간메모리
85664chunghan매트 (KOI15_mat)C++17
44 / 100
685 ms118304 KiB
#include<bits/stdc++.h> typedef long long int lld; using namespace std; class Line { public: int P, X, I, H, left; lld K; Line(int P, int X, int I, int H, lld K) : P(P), X(X), I(I), H(H), K(K) {} bool operator <(Line m) const{ return this->X < m.X || (this->X == m.K && this->H > m.K); } }; vector<Line> L; lld N, W, D[3005][6005], rst = 0; void solve(int i, int j) { Line r = L[i], l = L[j]; if(l.X > r.X) return; lld M = 0; if(l.K != -1) { if(l.X <= L[r.left].X) { M = r.K + D[l.I][j]; } else if(l.P != r.P && l.H + r.H <= W) { if(l.left < r.left) M = r.K + D[l.I][r.left]; else M = l.K + D[r.I][l.left]; } } M = max(r.K, M); if(j > 0) M = max(D[r.I][j-1], M); D[r.I][j] = M; rst = max(rst, M); } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); cin >> N >> W; for(int i = 0; i < N; i++) { int P, l, R, H; lld K; cin >> P >> l >> R >> H >> K; L.push_back(Line(P, l, i, H, -1)); L.push_back(Line(P, R, i, H, K)); } sort(L.begin(), L.end()); int id[3005] = {0}; for(int i = 0; i < 2*N; i++) { if(L[i].K == -1) id[L[i].I] = i; else L[i].left = id[L[i].I]; } for(int i = 0; i < 2*N; i++) { for(int j = 0; j < 2*N; j++) { if(L[j].P && L[j].K != -1) solve(j, i); if(!L[i].P && L[i].K != -1) solve(i, j); } } cout << rst; return 0; }
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