Submission #164099

#	Time	Username	Problem	Language	Result	Execution time	Memory
164099		beso123	Topovi (COCI15_topovi)	C++14	30 / 120	1532 ms	33652 KiB

topovi

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);++i)
#define repA(i,a,n) for(int i=a;i<=(n);++i)
#define repD(i,a,n) for(int i=a;i>=(n);--i)
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define ll long long
using namespace std;
map<int,int> xorr,xorc;
map<int,int> cntr,cntc;
map<pair<int,int>,int> rook;
ll ans = 0;
int n,k,p;
void add(int r,int c,int x){
    rook[{r,c}] ^= x;
    ans -= n-cntc[xorr[r]];
    ans -= n-cntr[xorc[c]];
    if (xorr[r] != xorc[c]) ans++;
    cntc[xorc[c]]--;
    cntr[xorr[r]]--;
    xorr[r] ^= x;
    xorc[c] ^= x;
    cntc[xorc[c]]++;
    cntr[xorr[r]]++;
    ans += n-cntc[xorr[r]];
    ans += n-cntr[xorc[c]];
    if (xorr[r] != xorc[c]) ans--;
}
int main(){
scanf("%d%d%d",&n,&k,&p);
    cntr[0] = n;
    cntc[0] = n;
    rep(i,k){
    	int r,c,x;
    	scanf("%d%d%d",&r,&c,&x);
    	add(r,c,x);
    }
    while(p--){
    	int r1,c1,r2,c2;
    	scanf("%d%d%d%d",&r1,&c1,&r2,&c2);
        int x = rook[{r1,c1}];
    	add(r1,c1,x);
        add(r2,c2,x);
    	printf("%d\n",ans);
    }
    return 0;
}

Compilation message (stderr)

topovi.cpp: In function 'int main()':
topovi.cpp:46:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
      printf("%d\n",ans);
                       ^
topovi.cpp:32:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 scanf("%d%d%d",&n,&k,&p);
 ~~~~~^~~~~~~~~~~~~~~~~~~
topovi.cpp:37:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d%d%d",&r,&c,&x);
      ~~~~~^~~~~~~~~~~~~~~~~~~
topovi.cpp:42:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d%d%d%d",&r1,&c1,&r2,&c2);
      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 120