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Submission #105728

# Submission time Handle Problem Language Result Execution time Memory
105728 2019-04-14T06:26:34 Z Pro_ktmr Boat (APIO16_boat) C++14
9 / 100
 2000 ms 525312 KB 
#include"bits/stdc++.h"
using namespace std;
#define LL long long
#define REP(i, n) for(int (i)=0; (i)<(n); (i)++)
#define PB push_back
#define MP make_pair
#define MOD 1000000007

int N;
int a[505],b[505];
vector<int> zaatu;

int dp[2][1000005];

int main(){
	
	scanf("%d", &N);
	for(int i=0; i<N; i++){
		scanf("%d%d", a+i, b+i);
		b[i]++;
		//zaatu.PB(a[i]);
		//zaatu.PB(b[i]);
		for(int j=a[i]; j<b[i]; j++) zaatu.PB(j);
	}
	zaatu.PB(0);
	zaatu.PB(INT_MAX);
	sort(zaatu.begin(), zaatu.end());
	zaatu.erase(unique(zaatu.begin(), zaatu.end()), zaatu.end());

	for(int i=0; i<zaatu.size(); i++){
		dp[N%2][i] = 1;
	}
	for(int i=N-1; i>=0; i--){
		LL tmp = 0;
		for(int j=zaatu.size()-2; j>=0; j--){
			LL ans = dp[(i+1)%2][j];
			if(a[i] <= zaatu[j+1] && zaatu[j+1] < b[i]) tmp += dp[(i+1)%2][j+1];
			tmp %= MOD;
			dp[i%2][j] = (ans + tmp) % MOD;
		}
	}

	cout << dp[0][0] - 1 << endl;
}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:30:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<zaatu.size(); i++){
               ~^~~~~~~~~~~~~
boat.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
boat.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", a+i, b+i);
   ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct

Subtask #2
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 55 ms 4592 KB Output is correct
22 Correct 52 ms 4592 KB Output is correct
23 Correct 53 ms 4592 KB Output is correct
24 Correct 66 ms 4540 KB Output is correct
25 Correct 58 ms 4592 KB Output is correct
26 Correct 57 ms 4592 KB Output is correct
27 Correct 57 ms 4592 KB Output is correct
28 Correct 56 ms 4592 KB Output is correct
29 Correct 69 ms 4592 KB Output is correct
30 Execution timed out 2064 ms 12120 KB Time limit exceeded
31 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 851 ms 525312 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 3 ms 256 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 4 ms 384 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 55 ms 4592 KB Output is correct
22 Correct 52 ms 4592 KB Output is correct
23 Correct 53 ms 4592 KB Output is correct
24 Correct 66 ms 4540 KB Output is correct
25 Correct 58 ms 4592 KB Output is correct
26 Correct 57 ms 4592 KB Output is correct
27 Correct 57 ms 4592 KB Output is correct
28 Correct 56 ms 4592 KB Output is correct
29 Correct 69 ms 4592 KB Output is correct
30 Execution timed out 2064 ms 12120 KB Time limit exceeded
31 Halted 0 ms 0 KB -