제출 #551034

#제출 시각아이디문제언어결과실행 시간메모리
551034tatyam게임 (IOI13_game)C++17
0 / 100
2 ms468 KiB
#include "game.h" #include <bits/stdc++.h> using namespace std; using u32 = uint32_t; using u64 = uint64_t; u32 R, C; struct DynamicSegTree{ unordered_map<u32, u64> seg; u64 at(u32 x) const { auto p = seg.find(x); if(p == seg.end()) return 0; return p->second; } void set(u32 i, u64 x){ i += C; seg[i] = x; while(i >= 2){ x = gcd(x, at(i ^ 1)); seg[i >>= 1] = x; } } u64 get(u32 l, u32 r) const { u64 ans = 0; l += C; r += C; while(l < r){ if(l & 1) ans = gcd(ans, at(l++)); if(r & 1) ans = gcd(ans, at(--r)); l >>= 1; r >>= 1; } return ans; } }; struct DynamicSegTree2D{ unordered_map<u32, DynamicSegTree> seg; void set(u32 i, u32 j, u64 x){ i += R; do seg[i].set(j, x); while(i >>= 1); } u64 get(u32 i, u32 y_l, u32 y_r) const { auto p = seg.find(i); if(p == seg.end()) return 0; return p->second.get(y_l, y_r); } u64 get(u32 l, u32 r, u32 y_l, u32 y_r) const { u64 ans = 0; l += C; r += C; while(l < r){ if(l & 1) ans = gcd(ans, get(l++, y_l, y_r)); if(r & 1) ans = gcd(ans, get(--r, y_l, y_r)); l >>= 1; r >>= 1; } return ans; } } seg; void init(int R, int C){ ::R = R; ::C = C; } void update(int P, int Q, long long K){ seg.set(P, Q, K); } long long calculate(int P, int Q, int U, int V){ return seg.get(P, U + 1, Q, V + 1); }
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