Submission #240697

#	Time	Username	Problem	Language	Result	Execution time	Memory
240697		aryan12	Game (IOI13_game)	C++17	0 / 100	168 ms	256004 KiB

game

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

vector<vector<long long> >seg;

int gg, ggg;

long long gcd2(long long a, long long b) {
    if(a == 0)
        return b;
    if(b == 0)
        return a;
    return gcd2(b, a % b);
}


void init(int r, int c) {
    r += 700;
    c += 700;
    gg = r;
    ggg = c;
    for(long long i = 0; i <= r * 2; i++) {
        vector<long long> temp;
        for(long long j = 0; j <= c * 2; j++) {
            temp.push_back(0);
        }
        seg.push_back(temp);
    }
}

void updateY(long long l, long long r, long long pos, long long xpos, long long qcol, long long qval) {
    //cout << "UpdateY " << l << " " << r << " " << qcol << " " << xpos << " " << pos << endl;
    if(l == r && l == qcol) {
        seg[xpos][pos] = qval;
        //cout << seg[xpos][pos] << endl;
        return;
    }
    else {
        long long mid = (l + r) / 2;
        if(qcol <= mid)
            updateY(l, mid, pos * 2, xpos, qcol, qval);
        else
            updateY(mid + 1, r, pos * 2 + 1, xpos, qcol, qval);
        seg[xpos][pos] = gcd2(seg[xpos][pos * 2], seg[xpos][pos * 2 + 1]);
    }
}

void updateX(long long l, long long r, long long pos, long long qrow, long long qcol, long long val, long long col) {
    //cout << "UpdateX " << l << " " << r << " " << qrow << " " << pos << endl;
    if(l == r && l == qrow) {
        updateY(1, col, 1, pos, qcol, val);
        return;
    }
    else {
        long long mid = (l + r) / 2;
        if(qrow <= mid)
            updateX(l, mid, pos * 2, qrow, qcol, val, col);
        else
            updateX(mid + 1, r, pos * 2 + 1, qrow, qcol, val, col);
    }
    for(int i = 0; i < seg[pos].size(); i++) {
        seg[pos][i] = gcd2(seg[pos * 2][i], seg[pos * 2 + 1][i]);
    }
}

long long queryY(long long l, long long r, long long pos, long long leftcol, long long rightcol, long long xpos) {
    if(l > rightcol || r < leftcol)
        return 0;
    if(leftcol <= l && r <= rightcol)
        return seg[xpos][pos];
    long long mid = (l + r) / 2;
    return gcd2(queryY(l, mid, pos * 2, leftcol, rightcol, xpos), queryY(mid + 1, r, pos * 2 + 1, leftcol, rightcol, xpos));
}

long long queryX(long long l, long long r, long long pos, long long leftrow, long long leftcol, long long rightrow, long long rightcol, long long y) {
    if(l > rightrow || r < leftrow)
        return 0;
    if(leftrow <= l && r <= rightrow)
        return queryY(1, y, 1, leftcol, rightcol, pos);
    long long mid = (l + r) / 2;
    return gcd2(queryX(l, mid, pos * 2, leftrow, leftcol, rightrow, rightcol, y), queryX(mid + 1, r, pos * 2 + 1, leftrow, leftcol, rightrow, rightcol, y));
}

int x = gg, y = ggg;

void update(int r, int c, long long val) {
    r++; c++;
    updateX(1, x, 1, r, c, val, y);
}

long long calculate(int r1, int c1, int r2, int c2) {
    r1++; c1++;
    r2++; c2++;
    return queryX(1, x, 1, r1, c1, r2, c2, y);
}

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 function 'void updateX(long long int, long long int, long long int, long long int, long long int, long long int, long long int)':
game.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < seg[pos].size(); i++) {
                    ~~^~~~~~~~~~~~~~~~~

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