Submission #116465

#	Time	Username	Problem	Language	Result	Execution time	Memory
116465		oolimry	NLO (COCI18_nlo)	C++14	110 / 110	1020 ms	63048 KiB

nlo

#include <bits/stdc++.h>

using namespace std;

int main()
{
    //freopen("i.txt","r",stdin);
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    long long n, m;
    cin >> n >> m;
    typedef pair<int, int> ii;

    static vector<int> stuff[100005];

    int q;
    cin >> q;
    for(int i = 0;i < n;i++){
        stuff[i].push_back(0);
        stuff[i].push_back(m * 1000);
    }
    for(int qq = 1;qq <= q;qq++){
        long long x, y, r;
        cin >> y >> x >> r;
        x--;
        y--;

        for(int i = y - r;i <= y + r;i++){
            long long dy = abs(i - y);
            long long dx = sqrt(r * r - dy * dy);

            //cout << dx << " " << dy << " " << r << "\n";
            stuff[i].push_back((x - dx) * 1000 + qq);
            stuff[i].push_back((x + dx + 1) * 1000 + 500 + qq);
        }
    }
    long long ans = 0;
    for(int i = 0;i < n;i++){
        sort(stuff[i].begin(),stuff[i].end());

        set<long long> values;

        for(int j = 0;j < stuff[i].size();j++){
            int s1 = stuff[i][j] / 1000;
            int s2 = stuff[i][j] % 1000;
            if(j != 0){
                set<long long>::iterator it = values.end();
                it--;
                long long v1 = q - *it;
                long long v2 = s1 - (stuff[i][j-1] / 1000);
                ans += v1 * v2;
                //cout << ans << " ";
            }

            if(s2 < 500){
                values.insert(s2);
            }
            else{
                values.erase(s2 - 500);
            }

        }
        //cout << ans << "\n";
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

nlo.cpp: In function 'int main()':
nlo.cpp:43:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0;j < stuff[i].size();j++){
                       ~~^~~~~~~~~~~~~~~~~
nlo.cpp:12:28: warning: typedef 'ii' locally defined but not used [-Wunused-local-typedefs]
     typedef pair<int, int> ii;
                            ^~

• Subtask 1: 110 / 110