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Submission #726807

# Submission time Handle Problem Language Result Execution time Memory
726807 2023-04-19T11:43:29 Z penguin133 Strange Device (APIO19_strange_device) C++17
30 / 100
 459 ms 53344 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

void solve(){
	int n, a, b;
	cin >> n >> a >> b;
	__int128 x = a;
	x *= b;
	vector <pi> v;
	if(b == 1){
		x = a;
		if(a%2 ==0)x /= 2;
	}
	int ans = 0;
	for(int i=1;i<=n;i++){
		int l, r; cin >> l >> r;
		if(l == r){
			v.push_back({l%x, l%x});
			continue;
		}
		l %= x;
		r %= x;
		if(l > r)v.push_back({l, x-1}), v.push_back({0, r});
		else v.push_back({l, r});
	}
	sort(v.begin(), v.end());
	int prv = -1, st = -1;
	for(auto [i, j] : v){
		if(i > prv){
			if(prv != -1)ans += prv-st+1;
			st = i;
		}
		prv = max(prv, j);
	}
	if(prv != -1)ans += prv-st+1;
	cout << ans;
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

strange_device.cpp:49:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main(){
      | ^~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 5 ms 1052 KB Output is correct
3 Correct 5 ms 984 KB Output is correct
4 Incorrect 1 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 320 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 288 ms 16848 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 391 ms 16824 KB Output is correct
3 Correct 391 ms 16868 KB Output is correct
4 Correct 420 ms 53228 KB Output is correct

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 391 ms 16824 KB Output is correct
3 Correct 391 ms 16868 KB Output is correct
4 Correct 420 ms 53228 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 426 ms 53216 KB Output is correct
7 Correct 417 ms 53132 KB Output is correct
8 Incorrect 459 ms 53344 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 391 ms 16824 KB Output is correct
3 Correct 391 ms 16868 KB Output is correct
4 Correct 420 ms 53228 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 43 ms 5672 KB Output is correct
7 Correct 47 ms 5712 KB Output is correct
8 Correct 44 ms 5700 KB Output is correct
9 Correct 48 ms 5644 KB Output is correct
10 Correct 41 ms 5612 KB Output is correct
11 Correct 42 ms 5704 KB Output is correct
12 Correct 40 ms 5600 KB Output is correct
13 Correct 46 ms 5620 KB Output is correct
14 Correct 41 ms 5648 KB Output is correct
15 Correct 46 ms 5604 KB Output is correct
16 Correct 45 ms 5700 KB Output is correct
17 Correct 40 ms 5600 KB Output is correct
18 Correct 420 ms 53132 KB Output is correct
19 Correct 409 ms 53116 KB Output is correct
20 Correct 455 ms 53208 KB Output is correct
21 Correct 44 ms 5600 KB Output is correct
22 Correct 40 ms 5656 KB Output is correct
23 Correct 134 ms 18476 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 44 ms 3120 KB Output is correct
3 Correct 45 ms 3152 KB Output is correct
4 Correct 449 ms 16872 KB Output is correct
5 Correct 44 ms 3056 KB Output is correct
6 Correct 42 ms 3040 KB Output is correct
7 Correct 43 ms 3096 KB Output is correct
8 Correct 44 ms 3096 KB Output is correct
9 Correct 42 ms 3108 KB Output is correct
10 Correct 43 ms 3112 KB Output is correct
11 Correct 42 ms 3076 KB Output is correct
12 Correct 39 ms 3112 KB Output is correct
13 Correct 45 ms 3052 KB Output is correct
14 Correct 423 ms 16784 KB Output is correct
15 Incorrect 44 ms 3140 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 5 ms 1052 KB Output is correct
3 Correct 5 ms 984 KB Output is correct
4 Incorrect 1 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -