Submission #113316

#	Time	Username	Problem	Language	Result	Execution time	Memory
113316		IVIosab	Topovi (COCI15_topovi)	C++17	120 / 120	1737 ms	46080 KiB

topovi

#include <bits/stdc++.h>

using namespace std;
#define ll long long
#define f first
#define s second
ll n,k,p;
ll ans=0;
map<pair<int,int>,long long> mpr;
map<int,long long> rows,cols,cntrows,cntcols;

void update(int r,int c,int x){
    ans-=(n-cntrows[cols[c]]);
    ans-=(n-cntcols[rows[r]]);
    if(rows[r]==cols[c]){
        ans++;
    }
    cntrows[rows[r]]--;
    rows[r]^=x;
    cntrows[rows[r]]++;
    cntcols[cols[c]]--;
    cols[c]^=x;
    cntcols[cols[c]]++;
    ans+=(n-cntrows[cols[c]]);
    ans+=(n-cntcols[rows[r]]);
    if(rows[r]==cols[c]){
        ans--;
    }
}

int main() {
    //freopen("sample-8.in", "r", stdin);
    //freopen("output8.txt", "w", stdout);
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>k>>p;
    cntcols[0]=cntrows[0]=n;
    for(int i=0;i<k;i++){
        int a,b,x;
        cin>>a>>b>>x;
        mpr[{a,b}]=x;
        update(a,b,x);
    }
    for(int i=0;i<p;i++){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        long long x=mpr[{a,b}];
        update(a,b,x);
        update(c,d,x);
        mpr[{c,d}]=x;
        cout<<ans<<endl;
    }
    return 0;
}

• Subtask 1: 120 / 120