Submission #788722

#	Time	Username	Problem	Language	Result	Execution time	Memory
788722		prefixorsuuffiixx	Examination (JOI19_examination)	C++14	100 / 100	2234 ms	1836 KiB

examination

    #include <iostream>
    #pragma GCC target ("avx2")
    #pragma GCC optimize("O3")
    #pragma GCC optimize("Ofast,unroll-loops")
    using namespace std;
    long long ans;
    int x,y,z;
    int n,m;

    int main() {
        ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
        int a[100001],b[100001];
        scanf("%d %d" , &n , &m);
        for (int i = 0;i<n;i++)scanf("%d %d" , &a[i] , &b[i]);
        while(m--){
            ans = 0;
            scanf("%d %d %d" , &x , &y , &z);
            for (int i = 0; i < n; i++)ans += (a[i] >= x & b[i] >= y & a[i]+b[i]>=z);
            cout << ans << '\n';
        }
    }

Compilation message (stderr)

examination.cpp: In function 'int main()':
examination.cpp:18:53: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   18 |             for (int i = 0; i < n; i++)ans += (a[i] >= x & b[i] >= y & a[i]+b[i]>=z);
      |                                                ~~~~~^~~~
examination.cpp:18:81: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   18 |             for (int i = 0; i < n; i++)ans += (a[i] >= x & b[i] >= y & a[i]+b[i]>=z);
      |                                                                        ~~~~~~~~~^~~
examination.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%d %d" , &n , &m);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
examination.cpp:14:37: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         for (int i = 0;i<n;i++)scanf("%d %d" , &a[i] , &b[i]);
      |                                ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:17:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |             scanf("%d %d %d" , &x , &y , &z);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57