Submission #169262

#	Time	Username	Problem	Language	Result	Execution time	Memory
169262		oolimry	Game (IOI13_game)	C++14	37 / 100	13093 ms	91616 KiB

game

#include "game.h"
#include <bits/stdc++.h>
using namespace std;

long long gcd2(long long X, long long Y) {
    long long tmp;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}
typedef pair<int,int> ii;

struct pair_hash
{
    template <class T1, class T2>
    std::size_t operator() (const std::pair<T1, T2> &pair) const
    {
        return std::hash<T1>()(pair.first) ^ std::hash<T2>()(pair.second);
    }
};

static unordered_map<ii, long long, pair_hash> tree;

int N, M;
void init(int R, int C) {
	N = R; M = C;
    return;
}

void update(int r, int c, long long v) {
	int nr = N + r;
	int nc = M + c;
	tree[ii(nr,nc)] = v;
	while(nr > 0){
		nc = M + c;
		while(nc > 0){
			if(nr < N){
				tree[ii(nr,nc)] = gcd2(tree[ii(nr<<1,nc)],tree[ii(nr<<1|1,nc)]);
			}
			else if(nc < M){
				tree[ii(nr,nc)] = gcd2(tree[ii(nr,nc<<1)],tree[ii(nr,nc<<1|1)]);
			}
			else tree[ii(nr,nc)] = v;
			nc >>= 1;
		}
		nr >>= 1;
	}
}

long long calculate(int t, int l, int b, int r) {
    long long ans = 0;
    b++; r++;
    for(t += N, b += N;t < b;t >>= 1, b >>= 1){
		if(t&1){
			for(int nl = l+M, nr = r+M;nl < nr;nr >>= 1, nl >>= 1){
				if(nl&1){
					ans = gcd2(ans, tree[ii(t,nl)]);
					//cout << t << " " << nl << "\n";
					nl++;
				}
				if(nr&1){
					nr--;
					ans = gcd2(ans, tree[ii(t,nr)]);
					//cout << t << " " << nr << "\n";
				}
			}
			t++;
		}
		if(b&1){
			b--;
			for(int nl = l+M, nr = r+M;nl < nr;nr >>= 1, nl >>= 1){
				if(nl&1){
					ans = gcd2(ans, tree[ii(b,nl)]);
					//cout << b << " " << nl << "\n";
					nl++;
				}
				if(nr&1){
					nr--;
					ans = gcd2(ans, tree[ii(b,nr)]);
					//cout << b << " " << nr << "\n";
				}
			}
		}
	}
	//cout << endl;
	return ans;
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:18:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~

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