Submission #3024659

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Source Code Expand

// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
using std::cerr;using std::cin;using std::cout;using std::abs;using std::min;using std::max;using std::swap;using std::map;using std::unordered_map;using std::unordered_set;using std::bitset;using std::pair;using std::set;using std::string;using std::vector;using ll=long long;using uint=unsigned int;using pii=pair<int,int>;using pll=pair<ll,ll>;using ull = unsigned long long;using ld=long double;using vci=vector<int>;using vcl=vector<ll>;template<typename T>void _dbg(const char*_s,T _h){cerr<<_s<<" = "<<_h<<"\n";}template<typename T,typename...Ts>void _dbg(const char*_s,T _h,Ts..._t){int _b=0;while(((_b+=*_s=='(')-=*_s==')')!=0||*_s!=',')cerr<<*_s++;cerr<<" = "<<_h<<",";_dbg(_s+1,_t...);}
#define f first
#define s second
#define pb emplace_back
struct init{init(){cin.tie(0);std::iostream::sync_with_stdio(0);cout<<std::fixed<<std::setprecision(10);cerr<<std::fixed<<std::setprecision(5);}~init(){
#ifdef LOCAL
#define dbg(...) _dbg(#__VA_ARGS__,__VA_ARGS__)
cerr<<"Time elapsed: "<<(double)clock()/CLOCKS_PER_SEC<<"s.\n";
#else
#define dbg(...) 
#endif
}}init;
ll p[11],c[11];
int32_t main() {
    
    ll n,g;
    cin>>n>>g;
    for(int i=1;i<=n;++i)
        cin>>p[i]>>c[i];
    vector<int> v(n);
    iota(v.begin(), v.end(), 1);
    int ans=123456789;
    do{
        ll cur=g;
        int pot=0;
        for (int i : v){
            int w=p[i];
            while(w&&cur>0){
                pot++;
                w--;
                cur-=i*100;
            }
            if(!w)
                cur -= c[i];
            if(cur<0){
                break;
            }
        }
        ans=min(ans,pot);
    }while(next_permutation(v.begin(), v.end()));
    cout<<ans<<'\n';

    

    return 0;
}

Submission Info

Judge Result