Submission #551676

#	Time	Username	Problem	Language	Result	Execution time	Memory
551676		cpp219	Sob (COCI19_sob)	C++17	110 / 110	76 ms	7116 KiB

sob

#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define fs first
#define sc second
#define debug(y) cout<<y,exit(0)
using namespace std;
typedef pair<ll,ll> LL;
const ll N = 500 + 9;
const ll inf = 1e18 + 7;

ll n,m;

int main(){
    ios_base::sync_with_stdio(NULL); cin.tie(0); cout.tie(0);
    #define task "tst"
    if (fopen(task".inp","r")){
        freopen(task".inp","r",stdin);
        //freopen(task".out","w",stdout);
    }
    cin>>n>>m;
    for (ll i = n - 1;i >= 0;){
        for (ll j = m;j <= n + m;j++){
            if ((i & j) == i){
                ll first = j + 1;
                while (j >= m){
                    cout<<i<<" "<<j<<"\n";
                    i--; j--;
                }
                m = first;
                break;
            }
        }
    }
}
/// be confident

Compilation message (stderr)

sob.cpp: In function 'int main()':
sob.cpp:18:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 29 / 29
• Subtask 3: 39 / 39
• Subtask 4: 32 / 32