Submission #29937

#	Time	Username	Problem	Language	Result	Execution time	Memory
29937		ozaslan	Game (IOI13_game)	C++14	37 / 100	13000 ms	41084 KiB

game

#include <bits/stdc++.h>
#include <stdio.h>
#include "game.h"
#define max_N 100001

long long gcd2(long long X, long long Y) {
	//printf("X\n");
    long long tmp;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}

long long mat[1000][1000];
long long st[10][max_N * 4];
int sa, su, sub;

void init(int R, int C) {
	sa = R;
	su = C;
	if(R > 10) sub = 1;
	else sub = 3;
}

void guncelle(int dugum, int sol, int sag, int satir, int sutun, long long K) {

    if (sol == sag) {
        st[satir][dugum] = K;
        return;
    }

    int orta = (sol + sag) / 2;

    if (orta >= sutun)
        guncelle(dugum*2, sol, orta, satir, sutun, K);
    else
        guncelle(dugum*2+1, orta+1, sag, satir, sutun, K);

    st[satir][dugum] = gcd2(st[satir][dugum*2], st[satir][dugum*2+1]);
}

void update(int P, int Q, long long K) {
    if (sub == 3)guncelle(1, 0, su-1, P, Q, K);
    else mat[P][Q] = K;
}

long long sorgu(int dugum, int sol, int sag, int satir, int aSol, int aSag) {
   // printf("Dugum: %d, sol: %d, sag: %d, satir: %d, aSol: %d, aSag: %d\n", dugum, sol, sag, satir, aSol, aSag);
    if(sol > aSag || sag < aSol)
        return -1;

    if(sol >= aSol && sag <= aSag)
        return st[satir][dugum];

    int orta = (sol + sag) / 2;
    long long s1 = sorgu(dugum*2, sol, orta, satir, aSol, aSag);
    long long s2 = sorgu(dugum*2+1, orta+1, sag, satir, aSol, aSag);

    if ( (s1 != -1) && (-1 != s2) )
        return gcd2(s1, s2);
    if (s1 == -1)
        return s2;
    return s1;
}


long long calculate(int P, int Q, int U, int V) {
    /* ... */

    if (sub == 3){

        long long ekok = sorgu(1, 0, su-1, P, Q, V);

        for (int i = P+1; i <= U; i++) {
            long long s = sorgu(1, 0, su-1, i, Q, V);
            ekok = gcd2(ekok, s);
        }

        return ekok;
    }

    else {
        long long ekok;// = mat[P][Q];

        for(int i = P; i <= U; i++) {
            for(int j = Q; j <= V; j++)
                ekok = gcd2(ekok, mat[i][j]);
        }

        return ekok;
    }
}

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 'long long int calculate(int, int, int, int)':
game.cpp:86:19: warning: 'ekok' may be used uninitialized in this function [-Wmaybe-uninitialized]
         long long ekok;// = mat[P][Q];
                   ^

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