Submission #1073886

---

Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define rep(i,x,y) for(int i=(x);i<(y);++i)
#define debug(x) #x << "=" << (x)

#ifdef DEBUG
#define _GLIBCXX_DEBUG
#define print(x) std::cerr << debug(x) << " (L:" << __LINE__ << ")" << std::endl
#else
#define print(x)
#endif

const int inf=1e9;
const int64_t inf64=1e18;
const double eps=1e-9;

template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec){
    os << "[";
    for (const auto &v : vec) {
    	os << v << ",";
    }
    os << "]";
    return os;
}

void solve(){
    int n;
    cin >> n;
    vector<int> a(n),b(n);
    int ans=0;
    rep(i,0,n) cin >> a[i] >> b[i];
    for(int i=n-1; i>=0; --i){
        a[i]+=ans;
        if(a[i]%b[i]==0) continue;
        ans+=(b[i]-a[i]%b[i]);
    }
    cout << ans << endl;
}

int main(){
    std::cin.tie(0);
    std::ios::sync_with_stdio(false);
    cout.setf(ios::fixed);
    cout.precision(10);
    solve();
    return 0;
}

Submission Info

Judge Result