제출 #164106

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
164106	2019-11-17 13:04:59	beso123	Topovi (COCI15_topovi)	C++14	120 / 120	1630 ms	35252 KiB

topovi

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#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);++i)
#define ll long long
using namespace std;
map<int,int> xorr,xorc,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(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k>>p;
 
 
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• Subtask 1: 120 / 120