oj.uz

Submission #377670

# Submission time Handle Problem Language Result Execution time Memory
377670 2021-03-14T16:51:36 Z ntabc05101 trapezoid (balkan11_trapezoid) C++14
100 / 100
 292 ms 39108 KB 
#ifndef LOCAL
#define NDEBUG 1
#endif // LOCAL
#include<bits/stdc++.h>

#define taskname ""

#define f first
#define s second

const int max_n=500000;
const int inf=1e9+9;
const int mod=30013;

std::vector<int> pList[max_n+1];
std::pair<int, int> bits[max_n+1];

void update(int x, std::pair<int, int> delta) {
        for (; x<=max_n; x+=x&-x) {
                if (bits[x].f<delta.f) {
                        bits[x]=delta;
                }
                else if (bits[x].f==delta.f) {
                        bits[x].s+=delta.s;
                        if (bits[x].s>=mod) {
                                bits[x].s-=mod;
                        }
                }
        }
}

std::pair<int, int> get(int x) {
        std::pair<int, int> ret={0, 0};
        for (; x>0; x&=x-1) {
                if (ret.f<bits[x].f) {
                        ret=bits[x];
                }
                else if (ret.f==bits[x].f) {
                        ret.s+=bits[x].s;
                        if (ret.s>=mod) {
                                ret.s-=mod;
                        }
                }
        }
        
        return ret;
}

int main() {
        if (fopen(taskname".inp", "r")) {
                freopen(taskname".inp", "r", stdin);
                freopen(taskname".out", "w", stdout);
        }
        else if (fopen(taskname".in", "r")) {
                freopen(taskname".in", "r", stdin);
                freopen(taskname".out", "w", stdout);
        }

        std::ios_base::sync_with_stdio(0); std::cin.tie(0);

        int n; std::cin>>n;
        int a[n][4];
        std::vector<int> points;
        points.push_back(inf);
        for (int i=0; i<n; ++i) {
                for (int j=0; j<4; ++j) {
                        std::cin>>a[i][j];
                        points.push_back(a[i][j]);
                }
        }

        std::sort(begin(points), end(points));
        points.resize(std::distance(begin(points), std::unique(begin(points), end(points))));
        std::unordered_map<int, int> compress;

        #define cpoint(x) (compress.count(x)>0 ? compress[x]: compress[x]=std::lower_bound(begin(points), end(points), x)-begin(points)+1)

        for (int i=0; i<n; ++i) {
                for (int j=0; j<4; ++j) {
                        a[i][j]=cpoint(a[i][j]);
                }

                pList[a[i][0]].push_back(i);
                pList[a[i][1]].push_back(i+n);
        }

        /*for (int i=0; i<n; ++i) {
                for (int j=0; j<4; ++j) std::cout<<a[i][j]<<" ";
                std::cout<<"\n";
        }*/

        update(1, {0, 1});
        std::pair<int, int> result[n];
        for (int i=1; i<=4*n; ++i) {
                for (auto& p: pList[i]) {
                        if (p<n) {
                                result[p]=get(a[p][2]);
                                ++result[p].f;
                        }
                        else {
                                update(a[p-n][3], result[p-n]);
                        }
                }
        }
        
        auto ret=get(4*n+1);
        std::cout<<ret.f<<" "<<ret.s<<"\n";

        return 0;
}

Compilation message

trapezoid.cpp: In function 'int main()':
trapezoid.cpp:51:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   51 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:52:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   52 |                 freopen(taskname".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:55:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   55 |                 freopen(taskname".in", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:56:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   56 |                 freopen(taskname".out", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12160 KB Output is correct
2 Correct 9 ms 12140 KB Output is correct
3 Correct 9 ms 12268 KB Output is correct
4 Correct 10 ms 12268 KB Output is correct
5 Correct 15 ms 12652 KB Output is correct
6 Correct 15 ms 13036 KB Output is correct
7 Correct 15 ms 13128 KB Output is correct
8 Correct 18 ms 13292 KB Output is correct
9 Correct 29 ms 14972 KB Output is correct
10 Correct 43 ms 16236 KB Output is correct
11 Correct 71 ms 19204 KB Output is correct
12 Correct 166 ms 26404 KB Output is correct
13 Correct 173 ms 28684 KB Output is correct
14 Correct 238 ms 33680 KB Output is correct
15 Correct 217 ms 30584 KB Output is correct
16 Correct 232 ms 31972 KB Output is correct
17 Correct 289 ms 36752 KB Output is correct
18 Correct 186 ms 30336 KB Output is correct
19 Correct 275 ms 38160 KB Output is correct
20 Correct 292 ms 39108 KB Output is correct