제출 #753828

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
753828		bgnbvnbv	이상한 기계 (APIO19_strange_device)	C++14	35 / 100	499 ms	53296 KiB

strange_device

#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<ll,ll>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll n,A,B;
vector<pli>vec;
void solve()
{
    cin >> n >> A >> B;
    ll x=(A/__gcd(A,B+1)) * B;
    bool ok=true;
    for(int i=1;i<=n;i++)
    {
        ll l,r;
        cin >> l >> r;
        if((r-l+1)>=x)
        {
            ok=false;
        }
        l%=x;
        r%=x;
        if(l<=r)
        {
            vec.pb({l,r});
        }
        else
        {
            vec.pb({l,x-1});
            vec.pb({0,r});
        }
    }
    if(ok==false)
    {
        cout << x;
        return;
    }
    sort(vec.begin(),vec.end());
    ll ans=0;
    for(int i=0;i<vec.size();i++)
    {
        ll j=i+1;
        ll r=vec[i].se;
        while(j<vec.size()&&vec[j].fi<=r)
        {
            r=max(r,vec[j].se);
            j++;
        }
        ans+=r-vec[i].fi+1;
        i=j-1;
    }
    cout << ans;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

컴파일 시 표준 에러 (stderr) 메시지

strange_device.cpp: In function 'void solve()':
strange_device.cpp:47:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     for(int i=0;i<vec.size();i++)
      |                 ~^~~~~~~~~~~
strange_device.cpp:51:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |         while(j<vec.size()&&vec[j].fi<=r)
      |               ~^~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30