oj.uz

Submission #100818

# Submission time Handle Problem Language Result Execution time Memory
100818 2019-03-14T16:39:09 Z MohamedAhmed0 Topovi (COCI15_topovi) C++14
120 / 120
 1827 ms 40056 KB 
#include <bits/stdc++.h>

using namespace std;

map< pair<int , int> , long long> mp ;
map<int , long long>rows , columns ;
map<int , long long>rowcnt , columncnt ;

long long n , k , p ;

long long ans = 0ll ;

void update(int r , int c , int x)
{
    ans -= (n - rowcnt[columns[c]]) ;
    ans -= (n - columncnt[rows[r]]) ;
    //handle double counting
    if(rows[r] == columns[c])
        ans++ ;
    rowcnt[rows[r]]-- ;
    rows[r] ^= x ;
    rowcnt[rows[r]]++;
    columncnt[columns[c]]-- ;
    columns[c] ^= x ;
    columncnt[columns[c]]++ ;
    ans += (n - rowcnt[columns[c]]) ;
    ans += (n - columncnt[rows[r]]) ;
    //handle double counting
    if(rows[r] == columns[c])
        ans-- ;
    return ;
}

int main()
{
    scanf("%lld %lld %lld" , &n , &k , &p) ;
    rowcnt[0] = columncnt[0] = n ;
    for(int i = 0 ; i < k ; ++i)
    {
        int a , b ;
        long long c ;
        scanf("%d %d %lld" , &a , &b , &c) ;
        mp[{a , b}] = c ;
        update(a , b , c) ;
    }
    while(p--)
    {
        int a , b , c , d ;
        scanf("%d %d %d %d" , &a , &b , &c , &d) ;
        int x = mp[{a , b}] ;
        update(a , b , x) ;
        update(c , d , x) ;
        mp[{c , d}] = x ;
        printf("%lld\n" , ans) ;
    }
    return 0 ;
}

Compilation message

topovi.cpp: In function 'int main()':
topovi.cpp:36:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%lld %lld %lld" , &n , &k , &p) ;
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
topovi.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %lld" , &a , &b , &c) ;
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
topovi.cpp:49:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d" , &a , &b , &c , &d) ;
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
120.0 / 120.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 181 ms 6264 KB Output is correct
7 Correct 139 ms 5660 KB Output is correct
8 Correct 130 ms 4600 KB Output is correct
9 Correct 129 ms 4800 KB Output is correct
10 Correct 155 ms 4956 KB Output is correct
11 Correct 1771 ms 39980 KB Output is correct
12 Correct 1763 ms 39824 KB Output is correct
13 Correct 1691 ms 40056 KB Output is correct
14 Correct 1757 ms 39760 KB Output is correct
15 Correct 1827 ms 40000 KB Output is correct
16 Correct 1716 ms 40052 KB Output is correct
17 Correct 1650 ms 39952 KB Output is correct
18 Correct 1697 ms 39884 KB Output is correct
19 Correct 1721 ms 39840 KB Output is correct
20 Correct 1757 ms 40056 KB Output is correct