Submission #674510

#	Time	Username	Problem	Language	Result	Execution time	Memory
674510		sugartheanh	RMQ (NOI17_rmq)	C++14	0 / 100	2 ms	340 KiB

rmq

#include <bits/stdc++.h>
#define ll long long
#define fo(i,a,b) for(int i=a;i<=b;++i)
#define fod(i,a,b) for(int i=a;i>=b;--i)
#define ii pair<ll,ll>
#define iii pair<ll,ii>
#define fi first
#define se second
#define oo 1e18
#define bit(x,i) (((x)>>(i))&1)
using namespace std;
const int MOD = 1e9 + 7;
const int N = 5e3 + 5;
int n,q,l,r,a,c[N],ans[N];
bool vs[N];
int main()
{
    #ifndef ONLINE_JUDGE
        freopen("new.inp","r",stdin);
        freopen("new.out","w",stdout);
    #endif // ONLINE_JUDGE
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin>>n>>q;
    while(q--)
    {
        cin>>l>>r>>a;
        fo(j,l,r)
            c[j] = max(c[j], a);
    }
    fo(i,0,n-1)
        vs[i] = 0,ans[i] = -1;
//    fo(i,0,n-1)
//        cout<<c[i]<<' ';
//    cout<<'\n';
    fo(i,0,n-1)
    {
        fo(j,0,n-1)
        {
            if(j >= c[i] && !vs[j])
            {
                ans[i] = j;
                vs[j] = 1;
                break;
            }
        }
    }
    fo(i,0,n-1)
    if(ans[i] == -1)
    {
        fo(j,1,n)
            cout<<-1<<' ';
        return 0;
    }
    fo(i,0,n-1)
        cout<<ans[i]<<' ';
}

Compilation message (stderr)

rmq.cpp: In function 'int main()':
rmq.cpp:19:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |         freopen("new.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
rmq.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen("new.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 23
• Subtask 2: 0 / 44
• Subtask 3: 0 / 33