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Submission #994738

# Submission time Handle Problem Language Result Execution time Memory
994738 2024-06-08T04:45:19 Z salmon Trains (BOI24_trains) C++14
71 / 100
 2000 ms 621248 KB 
#include <bits/stdc++.h>
using namespace std;

vector<int> v;
map<int,long long int> mep[100100];
vector<int> rebove[100100];
int N;
int d,x;
vector<pair<int,int>> iv;
long long int num[100100];
long long int mod = 1'000'000'007;

int main(){
	
	scanf(" %d",&N);
	
	for(int i = 0; i < N; i++){
		scanf(" %d",&d);
		scanf(" %d",&x);
		iv.push_back({d,x});
		num[i] = 0;
		rebove[(long long int)min((long long int)N,i + (long long int)d * x)].push_back(i);
	}
	
	/*for(int i = 0; i < N; i++){
		if(iv[i].first != 0){
			d = iv[i].first;
			x = iv[i].second;
			for(int j = 1; j <= x && j * d + i < N; j++){
				sat[j * d + i].insert(d);
				if(iv[j * d + i].first == d){
					x = max(x,j + iv[j * d + i].second);
					iv[j * d + i] = {0,0};
				}
			}
			
		}
	}*/
	
	num[0] = 1;
	long long int sum = 0;
	
	for(int i = 0; i < N; i++){
		for(pair<int,long long int> j : mep[i]){
			num[i] += j.second;
		}
		
		num[i] %= mod;
		
		mep[min(N,i + iv[i].first)][iv[i].first] += num[i];
		
		for(int j : rebove[i]){
			mep[i][iv[j].first] -= num[j];
			mep[i][iv[j].first] %= mod;
		}
		
		for(pair<int,long long int> j : mep[i]){
			if(j.second == 0) continue;
			mep[min(N,i + j.first)][j.first] += j.second;
		}

		sum = (sum + num[i]) % mod;
		//printf("%lld\n",num[i]);
	}
	
	printf("%lld",(sum + mod) % mod);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:15:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  scanf(" %d",&N);
      |  ~~~~~^~~~~~~~~~
Main.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   scanf(" %d",&d);
      |   ~~~~~^~~~~~~~~~
Main.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   scanf(" %d",&x);
      |   ~~~~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 1 ms 8028 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 8280 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 3 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 3 ms 8028 KB Output is correct
17 Correct 3 ms 8024 KB Output is correct
18 Correct 2 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 1 ms 8028 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 8280 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 3 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 3 ms 8028 KB Output is correct
17 Correct 3 ms 8024 KB Output is correct
18 Correct 2 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 17 ms 18828 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 28 ms 20564 KB Output is correct
23 Correct 4 ms 8540 KB Output is correct
24 Correct 4 ms 9064 KB Output is correct
25 Correct 74 ms 39188 KB Output is correct
26 Correct 2 ms 8284 KB Output is correct
27 Correct 6 ms 8796 KB Output is correct
28 Correct 4 ms 8796 KB Output is correct
29 Correct 5 ms 8876 KB Output is correct
30 Correct 18 ms 14168 KB Output is correct
31 Correct 7 ms 9048 KB Output is correct
32 Correct 4 ms 8796 KB Output is correct
33 Correct 53 ms 28756 KB Output is correct
34 Correct 5 ms 8796 KB Output is correct
35 Correct 5 ms 8796 KB Output is correct
36 Correct 88 ms 44420 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 5 ms 8540 KB Output is correct
3 Correct 3 ms 8356 KB Output is correct
4 Correct 4 ms 8796 KB Output is correct
5 Correct 22 ms 15136 KB Output is correct
6 Correct 24 ms 15664 KB Output is correct
7 Correct 22 ms 15940 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8024 KB Output is correct
10 Correct 2 ms 8036 KB Output is correct
11 Correct 5 ms 8796 KB Output is correct
12 Correct 22 ms 15560 KB Output is correct
13 Correct 3 ms 8028 KB Output is correct
14 Correct 4 ms 8800 KB Output is correct
15 Correct 28 ms 15484 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 38844 KB Output is correct
2 Correct 43 ms 33688 KB Output is correct
3 Correct 34 ms 21960 KB Output is correct
4 Correct 41 ms 31436 KB Output is correct
5 Correct 2 ms 8036 KB Output is correct
6 Correct 2 ms 8032 KB Output is correct
7 Correct 6 ms 8796 KB Output is correct
8 Correct 35 ms 15560 KB Output is correct

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 1 ms 8028 KB Output is correct
4 Correct 2 ms 8028 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8028 KB Output is correct
11 Correct 2 ms 8280 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 3 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 3 ms 8028 KB Output is correct
17 Correct 3 ms 8024 KB Output is correct
18 Correct 2 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 17 ms 18828 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 28 ms 20564 KB Output is correct
23 Correct 4 ms 8540 KB Output is correct
24 Correct 4 ms 9064 KB Output is correct
25 Correct 74 ms 39188 KB Output is correct
26 Correct 2 ms 8284 KB Output is correct
27 Correct 6 ms 8796 KB Output is correct
28 Correct 4 ms 8796 KB Output is correct
29 Correct 5 ms 8876 KB Output is correct
30 Correct 18 ms 14168 KB Output is correct
31 Correct 7 ms 9048 KB Output is correct
32 Correct 4 ms 8796 KB Output is correct
33 Correct 53 ms 28756 KB Output is correct
34 Correct 5 ms 8796 KB Output is correct
35 Correct 5 ms 8796 KB Output is correct
36 Correct 88 ms 44420 KB Output is correct
37 Correct 2 ms 8028 KB Output is correct
38 Correct 5 ms 8540 KB Output is correct
39 Correct 3 ms 8356 KB Output is correct
40 Correct 4 ms 8796 KB Output is correct
41 Correct 22 ms 15136 KB Output is correct
42 Correct 24 ms 15664 KB Output is correct
43 Correct 22 ms 15940 KB Output is correct
44 Correct 2 ms 8028 KB Output is correct
45 Correct 2 ms 8024 KB Output is correct
46 Correct 2 ms 8036 KB Output is correct
47 Correct 5 ms 8796 KB Output is correct
48 Correct 22 ms 15560 KB Output is correct
49 Correct 3 ms 8028 KB Output is correct
50 Correct 4 ms 8800 KB Output is correct
51 Correct 28 ms 15484 KB Output is correct
52 Correct 58 ms 38844 KB Output is correct
53 Correct 43 ms 33688 KB Output is correct
54 Correct 34 ms 21960 KB Output is correct
55 Correct 41 ms 31436 KB Output is correct
56 Correct 2 ms 8036 KB Output is correct
57 Correct 2 ms 8032 KB Output is correct
58 Correct 6 ms 8796 KB Output is correct
59 Correct 35 ms 15560 KB Output is correct
60 Correct 338 ms 215656 KB Output is correct
61 Correct 35 ms 28104 KB Output is correct
62 Correct 135 ms 73408 KB Output is correct
63 Correct 35 ms 28104 KB Output is correct
64 Correct 52 ms 15536 KB Output is correct
65 Execution timed out 2075 ms 621248 KB Time limit exceeded
66 Halted 0 ms 0 KB -