# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1267287 | hoa208 | Strange Device (APIO19_strange_device) | C++20 | 5093 ms | 589824 KiB |
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, b, a) for (int i = (b), _a = (a); i >= _a; i--)
#define pa pair<ll, ll>
#define fi first
#define se second
#define bit(mask, j) ((mask >> j) & 1)
const ll mod = 1e9 + 7;
const ll INF = 1e18;
//--------------------------------------------------------------------
ll n, A, B;
map<pa, bool> mp;
void hbmt() {
cin >> n >> A >> B;
ll cnt = 0;
FOR(i, 1, n) {
ll l, r;
cin >> l >> r;
for(ll j = l; j <= r; j++) {
ll x = (j + (j / B)) % A;
ll y = j % B;
if(mp.find({x, y}) == mp.end()) {
cnt++;
mp[{x, y}] = 1;
}
}
}
cout << cnt;
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
#define NAME "hbmt"
if(fopen(NAME".inp", "r")) {
freopen(NAME".inp", "r", stdin);
freopen(NAME".out", "w", stdout);
}
//int t;cin>>t;while(t--)
hbmt();
return 0;
}
Compilation message (stderr)
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