Submission #373715

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
373715	2021-03-05 13:46:33	eulerdesoja	Mate (COCI18_mate)	C++14	100 / 100	1086 ms	9452 KiB

mate

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#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define int long long
#define pb push_back
#define sz(x) int(x.size())
typedef pair<int,int>ii;
typedef vector<int> vi;
void setIO(string s) {
  ios_base::sync_with_stdio(0); cin.tie(0); 
  freopen((s+".in").c_str(),"r",stdin);
  freopen((s+".out").c_str(),"w",stdout);
}
const int M=1e9+7,mxn=2e3+5;
int fat[mxn],inv[mxn];
int mod(int a){int ret=a%M;if(ret<0)ret+=M;return ret;}
int exp(int a,int b){
  if(b==0)return 1ll;
  if(b==1)return mod(a);
  int t=mod(exp(a,b/2));
  if(b&1)return mod(a*mod(t*t));
  return mod(t*t);
}
int C(int n,int k){
  if(k>n)return 0ll;
  return mod(mod(fat[n]*inv[k])*inv[n-k]);
}
 
 
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Compilation message (stderr)

mate.cpp: In function 'void setIO(std::string)':
mate.cpp:14:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   14 |   freopen((s+".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mate.cpp:15:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   15 |   freopen((s+".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100