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Submission #612458

# Submission time Handle Problem Language Result Execution time Memory
612458 2022-07-29T15:28:31 Z DeMen100ns Palembang Bridges (APIO15_bridge) C++17
100 / 100
 94 ms 5476 KB 
#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using PQ=priority_queue<int>;
 
struct pii {
	int l, r;
	bool operator<(pii b) const { return l+r<b.l+b.r; }
};
int main() {
	int K, N, M=0;
	scanf("%d%d", &K, &N);
	pii A[N];
	ll B[N], s=0, w=0;
	for(int i=0; i<N; i++) {
		char a, b;
		int l, r;
		scanf(" %c%d %c%d", &a, &l, &b, &r);
		if(l>r) swap(l, r);
		if(a!=b) A[M++]={l, r};
		else s+=r-l;
	}
	s+=N=M;
	sort(A, A+N);
 
	PQ L, R;
	auto add=[&](pii v) {
		L.push(v.l), R.push(-v.r);
		w+=v.r-v.l;
		if(L.top()>-R.top()) {
			int l=L.top(), r=-R.top();
			L.pop(), R.pop();
			L.push(r), R.push(-l);
			w+=(l-r)*2;
		}
		return w;
	};
 
	for(int i=0; i<N; i++) B[i]=add(A[i]);
	w=0;
	PQ().swap(L);
	PQ().swap(R);
	ll t=N ? B[N-1] : 0;
	if(N && K==2) for(int i=N; --i;) t=min(t, add(A[i])+B[i-1]);
	printf("%lld\n", s+t);
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%d%d", &K, &N);
      |  ~~~~~^~~~~~~~~~~~~~~~
bridge.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   scanf(" %c%d %c%d", &a, &l, &b, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 32 ms 3596 KB Output is correct
13 Correct 57 ms 5160 KB Output is correct
14 Correct 47 ms 3880 KB Output is correct
15 Correct 34 ms 3220 KB Output is correct
16 Correct 34 ms 4508 KB Output is correct
17 Correct 53 ms 5148 KB Output is correct
18 Correct 37 ms 4760 KB Output is correct
19 Correct 63 ms 5160 KB Output is correct
20 Correct 45 ms 4640 KB Output is correct
21 Correct 56 ms 4896 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 300 KB Output is correct
12 Correct 1 ms 300 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 304 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 308 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 2 ms 340 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 300 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 300 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 300 KB Output is correct
18 Correct 1 ms 300 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 38 ms 3860 KB Output is correct
26 Correct 57 ms 3992 KB Output is correct
27 Correct 75 ms 4836 KB Output is correct
28 Correct 79 ms 5452 KB Output is correct
29 Correct 71 ms 5392 KB Output is correct
30 Correct 41 ms 3048 KB Output is correct
31 Correct 36 ms 4740 KB Output is correct
32 Correct 89 ms 5476 KB Output is correct
33 Correct 43 ms 4996 KB Output is correct
34 Correct 94 ms 5376 KB Output is correct
35 Correct 58 ms 4912 KB Output is correct
36 Correct 84 ms 5124 KB Output is correct
37 Correct 35 ms 3888 KB Output is correct