Submission #40663

#	Time	Username	Problem	Language	Result	Execution time	Memory
40663		top34051	Game (IOI13_game)	C++14	10 / 100	35 ms	1332 KiB

game

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

#define ll long long
const int maxn = 1e7 + 5;
int R, C, sz = 1;
int rec[maxn][3];
ll seg[maxn];

ll gcd2(ll X, ll Y) {
    ll tmp;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}

class segtree {
public:
    int get(int pos, int dir) {
        if(!rec[pos][dir]) rec[pos][dir] = ++sz;
        return rec[pos][dir];
    }
    void row_update(int pos, int l, int r, int x, int y, ll val) {
//        printf("row_update [%d, %d] : (%d, %d) val = %lld\n",l,r,x,y,val);
        if(l>r || r<x || x<l) return ;
        col_update(get(pos,2), 1, C, y, val);
        if(l==r) return ;
        int mid = (l+r)/2;
        row_update(get(pos,0), l, mid, x, y, val);
        row_update(get(pos,1), mid+1, r, x, y, val);
    }
    void col_update(int pos, int l, int r, int x, ll val) {
//        printf("------- col_update [%d, %d] : (%d) val = %lld\n",l,r,x,val);
        if(l>r || r<x || x<l) return ;
        if(l==r) {
            seg[pos] = val;
//            printf("------- seg[%d, %d] = %lld\n",l,r,seg[pos]);
            return ;
        }
        int mid = (l+r)/2;
        col_update(get(pos,0), l, mid, x, val);
        col_update(get(pos,1), mid+1, r, x, val);
        seg[pos] = gcd2(seg[get(pos,0)], seg[get(pos,1)]);
//        printf("------- seg[%d, %d] = %lld (%lld and %lld)\n",l,r,seg[pos],seg[get(pos,0)],seg[get(pos,1)]);
    }
    ll row_query(int pos, int l, int r, int r1, int r2, int c1, int c2) {
        if(l>r || r<r1 || r2<l) return 0LL;
        if(r1<=l && r<=r2) return col_query(get(pos,2), 1, C, c1, c2);
        int mid = (l+r)/2;
        return gcd2(row_query(get(pos,0), l, mid, r1, r2, c1, c2), row_query(get(pos,1), mid+1, r, r1, r2, c1, c2));
    }
    ll col_query(int pos, int l, int r, int x, int y) {
        if(l>r || r<x || y<l) return 0LL;
        if(x<=l && r<=y) return seg[pos];
        int mid = (l+r)/2;
        return gcd2(col_query(get(pos,0), l, mid, x, y), col_query(get(pos,1), mid+1, r, x, y));
    }
    void update(int x, int y, ll val) {
        row_update(1, 1, R, x, y, val);
    }
    ll query(int r1, int r2, int c1, int c2) {
//        printf("QUERY (%d, %d) (%d, %d)\n",r1,r2,c1,c2);
//        return row_query(1, 1, R, r1, r2, c1, c2);
        int x,y;
        ll ans = 0;
        for(x=r1;x<=r2;x++) {
            for(y=c1;y<=c2;y++) {
                ans = gcd2(ans, row_query(1,1,R,x,x,y,y));
            }
        }
        return ans;
    }
};

segtree tree;

void init(int N, int M) {
    R = N; C = M;
    assert(R<=100 && C<=100);
}

void update(int P, int Q, ll K) {
    tree.update(P+1, Q+1, K);
}

long long calculate(int P, int Q, int U, int V) {
    return tree.query(P+1, U+1, Q+1, V+1);
}

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