제출 #781707

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
781707		devariaota	이상한 기계 (APIO19_strange_device)	C++17	0 / 100	472 ms	17136 KiB

strange_device

#include<bits/stdc++.h>
using namespace std;
#define ioss ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define int long long
#define pii pair<int, int>
#define fi first
#define se second
#define pb push_back
int n, a, b;
bool comp(pii a, pii b) {
    return (a.fi < b.fi || (a.fi == b.fi && a.se < b.se));
}
signed main() {
    ioss;
    cin >> n >> a >> b;
    int tmp = a*b;
    if((b+1)%a == 0) tmp = b;
    vector<pii> idx;
    for(int i = 0; i < n; i++) {
        int l, r; cin >> l >> r;
        l %= tmp, r %= tmp;
        if(r < l) r += tmp;
        idx.pb({l, r});
    }
    sort(idx.begin(), idx.end(), comp);

    int ans = 0;
    for(int i = 0; i < n; i++) {
        auto [l, r] = idx[i];
        if((r-l)+1 >= tmp) {
            ans = tmp;
            break;
        }
        if(i == 0) ans += (r-l)+1;
        else {
            auto [x, y] = idx[i-1];
            if(x <= l && y >= l) l = y+1;
            else if(x <= r && y >= r) r = x-1;
            else if(x <= l && y >= r) continue;
            ans += (r-l)+1;
        }
    }
    cout << ans << endl;
}

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• Subtask 3: 0 / 5
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• Subtask 8: 0 / 30