Submission #1609021

---

Source Code Expand

#include <bits/stdc++.h>
#include<string.h>
using namespace std;
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define endl "\n"
#define Max(x,y,z) max(x,max(y,z))
#define Min(x,y,z) min(x,min(y,z))
#define fr(i,s,e) for(i=s;i<e;i++)
#define rf(i,s,e) for(i=s-1;i>=e;i--)
#define pb push_back
#define eb emblace_back
#define mp make_pair
#define ff first
#define ss second
#define ll long long
#define trace1(x)                cerr<<#x<<": "<<x<<endl
#define trace2(x, y)             cerr<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define trace3(x, y, z)          cerr<<#x<<":" <<x<<" | "<<#y<<": "<<y<<" | "<<#z<<": "<<z<<endl
#define trace4(a, b, c, d)       cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<endl
#define trace5(a, b, c, d, e)    cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<" | "<<#e<< ": "<<e<<endl
#define trace6(a, b, c, d, e, f) cerr<<#a<<": "<<a<<" | "<<#b<<": "<<b<<" | "<<#c<<": "<<c<<" | "<<#d<<": "<<d<<" | "<<#e<< ": "<<e<<" | "<<#f<<": "<<f<<endl
#define vl vector<long long>
 
#define vi vector<int> 
#define vii vector< vector<int> >
#define vll vector< vector<long long> >
#define vpi vector< pair<int,int> >   
#define vpl vector< pair<ll,ll> >   
typedef pair<pair<int, ll>,int> P;
 #define mod %1000000007
// #define p 41
bool less_vectors(const vector<int>& a,const vector<int>& b) 
{
   return a.size() > b.size();
}
 
ll gcd(ll a,ll b)
{
if(a%b==0)
   return b;
   else
        return gcd(b,a%b);
}
class compr
{
   public:
bool operator()(pair<pair<int,ll>,int>  p1,pair<pair<int,ll>,int> p2)
{
   if(p1.ff.ss!=p2.ff.ss)
        return p1.ff.ss>p2.ff.ss;
        else
             if(p1.ss!=p2.ss)
             return p1.ss>p2.ss;
             else
                  return p1.ff<p2.ff;
             
}

};
ll fastexpo(ll a,ll b)
{
   //trace2(a,b);
   ll res=1;
   while(b>0)
   {
        if(b%2==1)
             res=(((res)mod)*((a)mod))mod;
        a=(((a)mod)*((a)mod))mod;
        b/=2;
   }
   //trace1(res);
   return res;
}
ll fastexpom(ll a,ll b,ll m)
{
ll res=1;
   while(b>0)
   {
        if(b%2==1)
             res=(((res)%m)*((a)%m))%m;
        a=(((a)%m)*((a)%m))%m;
        b/=2;
   }
   return res;
}
ll modinv(ll a,ll m=1000000007)
{
return fastexpom(a,m-2,m);
}
bool cmp(pair<int,int> p1,pair<int,int> p2)
{
	if((p1.ss-p1.ff)!=(p2.ss-p2.ff))
		return p1.ss-p1.ff<p2.ss-p2.ff;
	else
		return p1.ff<p2.ff;
}
bool cmp(string s1,string s2)
{
	if(s1.length()!=s2.length())
		return s1.length()>s2.length();
	else
		return s1<s2;
}
int main()
{
  	IOS;
 	#ifndef ONLINE_JUDGE
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
	#endif
	int n;
	cin>>n;
	vl a(n);
	vl b(n);
	ll cnt=0;
	for(int i=0;i<n;i++)
	{
		cin>>a[i]>>b[i];
	}
	for(int i=n-1;i>=0;i--)
	{
		//trace3(a[i],b[i],cnt);
		if(((a[i]+cnt)%b[i]))
			cnt+=b[i]-(a[i]+cnt)%b[i];
	}
	cout<<cnt;
  return 0;
}  

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:108:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
  freopen("input.txt","r",stdin);
                                ^
./Main.cpp:109:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
  freopen("output.txt","w",stdout);
                                  ^

Judge Result