Submission #54531

#	Time	Username	Problem	Language	Result	Execution time	Memory
54531		KieranHorgan	Game (IOI13_game)	C++17	100 / 100	6552 ms	168832 KiB

game

#pragma GCC optimize("Ofast")
#include "game.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
 
long long gcd2(long long X, long long Y) {
    long long tmp;
    if(X==0&&Y==0) return 0;
    if(X==0) return Y;
    if(Y==0) return X;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}
 
int R, C;
struct colNode {
    int l, r;
    ll st;
    colNode *left, *right;
    colNode(int lv, int rv): left(NULL), right(NULL), st(0) {l=lv; r=rv;};
};
set<pair<int, int>> isNew;
ll query(int x, int y, colNode *cur) {
    if(cur == NULL) return 0;
    if(x >= cur->r || y <= cur->l) return 0;
    if(y >= cur->r && x <= cur->l) return cur->st;
    if(cur->right==NULL) return query(x, y, cur->left);
    if(cur->left==NULL) return query(x, y, cur->right);
    return gcd2(query(x, y, cur->left),
                query(x, y, cur->right));
}
void update(int j, ll val, colNode *cur, colNode *rowL, colNode *rowR) {
    if(cur == NULL) return;
    if(j < cur->l || j >= cur->r) return;
    if(cur->l + 1 == cur->r) {
        if(rowL == NULL && rowR == NULL) cur->st = val;
        else if(rowL == NULL) cur->st = query(j, j+1, rowR);
        else if(rowR == NULL) cur->st = query(j, j+1, rowL);
        else cur->st = gcd2(query(j, j+1, rowL), query(j, j+1, rowR));
        return;
    }
    int mid = (cur->l + cur->r)/2;
    if(j < mid) {
        if(cur->left == NULL) {
            cur->left = new colNode(j, j+1);
        } else if(cur->left->l != cur->l || cur->left->r != mid) {
            int mid2 = (cur->l+mid)/2;
            if(cur->left->l < mid2) {
                cur->left->left = new colNode(cur->left->l, cur->left->r);
                cur->left->left->st = cur->left->st;
            } else {
                cur->left->right = new colNode(cur->left->l, cur->left->r);
                cur->left->right->st = cur->left->st;
            }
            cur->left->l = cur->l;
            cur->left->r = mid;
        }
        update(j, val, cur->left, rowL, rowR);
    } else {
        if(cur->right == NULL) {
            cur->right = new colNode(j, j+1);
        } else if(cur->right->l != mid || cur->right->r != cur->r) {
            int mid2 = (cur->r+mid)/2;
            if(cur->right->l < mid2) {
                cur->right->left = new colNode(cur->right->l, cur->right->r);
                cur->right->left->st = cur->right->st;
            } else {
                cur->right->right = new colNode(cur->right->l, cur->right->r);
                cur->right->right->st = cur->right->st;
            }
            cur->right->l = mid;
            cur->right->r = cur->r;
        }
        update(j, val, cur->right, rowL, rowR);
    }
    if(cur->left==NULL) cur->st = cur->right->st;
    else if(cur->right==NULL) cur->st = cur->left->st;
    else cur->st = gcd2(cur->left->st, cur->right->st);
}
struct rowNode {
    int l, r;
    rowNode *left, *right;
    colNode *col;
    rowNode(int lv, int rv): left(NULL), right(NULL) {l=lv; r=rv; col = new colNode(0, C);};
};
void update(int i, int j, ll val, rowNode *cur) {
    if(cur == NULL) return;
    if(i < cur->l || i >= cur->r) return;
    int mid = (cur->l + cur->r)/2;    
    if(cur->l+1 == cur-> r) {
    } else if(i < mid) {
        if(cur->left == NULL)
            cur->left = new rowNode(cur->l, mid);
        update(i, j, val, cur->left);
    } else {
        if(cur->right == NULL)
            cur->right = new rowNode(mid, cur->r);
        update(i, j, val, cur->right);
    }
    if(cur->left == NULL && cur->right == NULL) update(j, val, cur->col, NULL, NULL);
    else if(cur->left == NULL) update(j, val, cur->col, NULL, cur->right->col);
    else if(cur->right == NULL) update(j, val, cur->col, cur->left->col, NULL);
    else update(j, val, cur->col, cur->left->col, cur->right->col);
}
ll query(int x, int y, int nx, int ny, rowNode *cur) {
    if(cur == NULL) return 0;
    if(x >= cur->r || y <= cur->l) return 0;
    if(y >= cur->r && x <= cur->l) return query(nx, ny, cur->col);
    if(cur->right==NULL) return query(x, y, nx, ny, cur->left);
    if(cur->left==NULL) return query(x, y, nx, ny, cur->right);
    return gcd2(query(x, y, nx, ny, cur->left),
                query(x, y, nx, ny, cur->right));
}

rowNode root(0,1);

void init(signed r, signed c) {
    R = r;
    C = c;
    root = *(new rowNode(0, R));
}

void update(signed P, signed Q, long long K) {
    update(P, Q, K, &root);
}
 
long long calculate(signed P, signed Q, signed U, signed V) {
    return query(P, U+1, Q, V+1, &root);;
}

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;
      ^~~
game.cpp: In constructor 'colNode::colNode(int, int)':
game.cpp:24:21: warning: 'colNode::right' will be initialized after [-Wreorder]
     colNode *left, *right;
                     ^~~~~
game.cpp:23:8: warning:   'long long int colNode::st' [-Wreorder]
     ll st;
        ^~
game.cpp:25:5: warning:   when initialized here [-Wreorder]
     colNode(int lv, int rv): left(NULL), right(NULL), st(0) {l=lv; r=rv;};
     ^~~~~~~

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