Submission #551045

#	Time	Username	Problem	Language	Result	Execution time	Memory
551045		tatyam	Game (IOI13_game)	C++17	0 / 100	1 ms	468 KiB

game

#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 += R;
        r += R;
        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);
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 27
• Subtask 3: 0 / 26
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20