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Submission #249040

# Submission time Handle Problem Language Result Execution time Memory
249040 2020-07-14T08:39:52 Z crossing0ver Strange Device (APIO19_strange_device) C++17
0 / 100
 566 ms 504 KB 
#include<bits/stdc++.h>
#define inf 2000000000000000000
#define ll long long
using namespace std;

struct tre{
	ll lazy,sum,L,R;
	tre() {
		lazy = sum = L = R = 0;
	}
};
vector<tre>t(1);

void push(int v,int tl,int tr,int L,int R) {
	int tm = (tl + tr)/2;
	if (t[v].lazy) {
		t[L].lazy = t[R].lazy = 1;
		t[L].sum = tm - tl+1;
		t[R].sum = tr - tm;
		t[v].lazy = 0;
	}
}

void upd(int v,int tl,int tr,int l,int r) {
	if (l > tr || r < tl) return;
	if (l <= tl && r >= tr) {
		t[v].lazy = 1;
		t[v].sum = tr - tl + 1;
		return;
	}
	int tm = (tl + tr)/2;
	if (t[v].L == 0) {
		t[v].L = t.size();
		t.push_back(tre());
	}
	if (t[v].R == 0) {
		t[v].R = t.size();
		t.push_back(tre());
	}
	push(v,tl,tr,t[v].L,t[v].R);
	upd(t[v].L,tl,tm,l,r);
	upd(t[v].R,tm+1,tr,l,r);
	t[v].sum = t[ t[v].L ].sum + t[ t[v].R ].sum;
}


main() {
	ll n,a,b;
	cin >> n >> a >> b;
	ll m = a/(__gcd(a,b+1));
	if (m > inf/b) m = inf;
	else m*=b;
	
		for (int l,r;n--;) {
		cin >> l >> r;
		if (r - l + 1 >= m) {
			cout << m <<'\n';
			exit(0);
		}
		l%=m;
		r%=m;
		if ( l <= r) {
			upd(0,0,m-1,l,r);
		//	cout << t[0].sum <<'\n';
		}
		else {
			upd(0,0,m-1,l,m-1);
			upd(0,0,m-1,0,r);
		}
	}
	cout << t[0].sum;
	
}

Compilation message

strange_device.cpp:47:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 7 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 0 ms 256 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 1 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 566 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 566 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 566 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 93 ms 504 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Incorrect 7 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -