Submission #725260

#TimeUsernameProblemLanguageResultExecution timeMemory
725260BaytoroPairs (IOI07_pairs)C++17
30 / 100
24 ms1992 KiB
#include <bits/stdc++.h> using namespace std; #define ios ios::sync_with_stdio(false); cin.tie(NULL);cout.tie(NULL); #define pb push_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define fr first #define sc second #define endl '\n' #define ll long long #define int long long void fopn(string name){ freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout); } const ll INF=1e18,mod=1e9+9,N=1e5+5; void solve(){ int b,n,d,m; cin>>b>>n>>d>>m; if(b==1){ vector<int> a(n); for(int i=0;i<n;i++) cin>>a[i]; sort(all(a)); int ans=0; for(int i=0;i<n;i++){ int j=upper_bound(all(a),a[i]+d)-a.begin(); ans+=j-i-1; } cout<<ans<<endl; } else{ cout<<-1; } } main(){ //fopn("team"); ios; int T=1; //cin>>T; for(int i=1;i<=T;i++){ //cout<<"Case #"<<i<<": "; solve(); } }

Compilation message (stderr)

pairs.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   35 | main(){
      | ^~~~
pairs.cpp: In function 'void fopn(std::string)':
pairs.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pairs.cpp:14:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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