oj.uz

Submission #337507

# Submission time Handle Problem Language Result Execution time Memory
337507 2020-12-21T02:53:38 Z beksultan04 Star triangles (IZhO11_triangle) C++14
100 / 100
 341 ms 10832 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
const int N = 1e6+12,INF=1e9+7;
int dp[N],x[N],y[N];

main(){
    int n,i,j,ans=0;
    scan1(n)
    vector <int> a,b;
    for (i=0;i<n;++i){
        scan2(x[i],y[i])
        a.pb(x[i]);
        b.pb(y[i]);
    }
    sort(all(a));
    sort(all(b));
    for (i=0;i<n;++i){
        int l1 = lower_bound(all(a),x[i])-a.begin();
        int r1 = upper_bound(all(a),x[i])-a.begin()-1;
        int l2 = lower_bound(all(b),y[i])-b.begin();
        int r2 = upper_bound(all(b),y[i])-b.begin()-1;
        ans += (r2-l2)*(r1-l1);

    }
    cout <<ans;
}

Compilation message

triangle.cpp:22:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main(){
      |      ^
triangle.cpp: In function 'int main()':
triangle.cpp:23:13: warning: unused variable 'j' [-Wunused-variable]
   23 |     int n,i,j,ans=0;
      |             ^
triangle.cpp:11:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
triangle.cpp:24:5: note: in expansion of macro 'scan1'
   24 |     scan1(n)
      |     ^~~~~
triangle.cpp:12:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 | #define scan2(a,b) scanf("%lld %lld",&a, &b);
      |                    ~~~~~^~~~~~~~~~~~~~~~~~~~
triangle.cpp:27:9: note: in expansion of macro 'scan2'
   27 |         scan2(x[i],y[i])
      |         ^~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 7 ms 748 KB Output is correct
13 Correct 6 ms 748 KB Output is correct
14 Correct 9 ms 748 KB Output is correct
15 Correct 100 ms 3672 KB Output is correct
16 Correct 118 ms 3928 KB Output is correct
17 Correct 100 ms 3692 KB Output is correct
18 Correct 99 ms 3672 KB Output is correct
19 Correct 309 ms 10832 KB Output is correct
20 Correct 212 ms 6864 KB Output is correct
21 Correct 339 ms 10832 KB Output is correct
22 Correct 341 ms 10832 KB Output is correct