제출 #472072

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
472072		julian33	이상한 기계 (APIO19_strange_device)	C++14	0 / 100	5052 ms	524292 KiB

strange_device

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);} 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int mxN=2e5+5; //make sure this is right
const int mod=1e9+7;

int main(){
    cin.sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #ifdef LOCAL
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    int n; cin>>n;
    ll a,b; cin>>a>>b;
    set<pll> seen;
    if(n==1){
        ll l,r; cin>>l>>r;
        cout<<min(r-l+1,a*b)<<"\n";
    } else{
        for(int i=0;i<n;i++){
            ll l,r; cin>>l>>r;
            for(ll j=l;j<=r;j++){
                seen.insert({(j%a+(j/b)%a)%a,j%b});
            }
        }
        cout<<sz(seen)<<"\n";
    }
}

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