Submission #1208657

#	Time	Username	Problem	Language	Result	Execution time	Memory
1208657		k1r1t0	Hexagonal Territory (APIO21_hexagon)	C++20	Compilation error	0 ms	0 KiB

hexagon

#include <bits/stdc++.h>

using namespace std;
#define int long long

const int N = 1100000;

int n, a, b, c, l[N], r[N];
vector<int> tt;

int mul(int a, int b) {
	int ans = 0;
	while (b) {
		if (b & 1) ans = min(ans + a, (int)(1e18+1));
		a = min(a + a, (int)(1e18+1));
		b /= 2;
	}
	return ans;
}

int32_t main() {
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n >> a >> b;
	c = mul(a / gcd(a, b + 1), b);
	for (int i = 1; i <= n; i++) {
		cin >> l[i] >> r[i];
		if (r[i] - l[i] + 1 >= c) {
			cout << c;
			return 0;
		}
		if (l[i] % c <= r[i] % c) {
			tt.push_back(-(l[i] % c + 1));
			tt.push_back(r[i] % c + 1);
		} else {
			tt.push_back(-1);
			tt.push_back(r[i] % c + 1);
			tt.push_back(-(l[i] % c + 1));
			tt.push_back(c);
		}
	}
	sort(begin(tt), end(tt), [&](int i, int j) {
		return abs(i) < abs(j) || (abs(i) == abs(j) && i < j);
	});
	int ans = 0, last = -1, cnt = 0;
	for (int x : tt) {
		if (x > 0) {
			cnt--;
			if (cnt == 0)
				ans += x - last + 1;
		} else {
			cnt++;
			if (cnt == 1)
				last = -x;
		}
	}
	cout << ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccQanatH.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccMEUx6K.o:hexagon.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccQanatH.o: in function `main':
grader.cpp:(.text.startup+0x220): undefined reference to `draw_territory(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status