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Submission #994741

# Submission time Handle Problem Language Result Execution time Memory
994741 2024-06-08T04:47:12 Z salmon Trains (BOI24_trains) C++14
71 / 100
 2000 ms 613832 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] = (mep[i][iv[j].first] - num[j]) % 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 3 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 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 8024 KB Output is correct
7 Correct 1 ms 8028 KB Output is correct
8 Correct 1 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 8028 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 1 ms 8028 KB Output is correct
14 Correct 2 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 2 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 2 ms 8024 KB Output is correct
19 Correct 2 ms 8024 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 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 8024 KB Output is correct
7 Correct 1 ms 8028 KB Output is correct
8 Correct 1 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 8028 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 1 ms 8028 KB Output is correct
14 Correct 2 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 2 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 2 ms 8024 KB Output is correct
19 Correct 2 ms 8024 KB Output is correct
20 Correct 19 ms 18780 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 28 ms 20688 KB Output is correct
23 Correct 3 ms 8540 KB Output is correct
24 Correct 5 ms 8916 KB Output is correct
25 Correct 76 ms 39112 KB Output is correct
26 Correct 3 ms 8280 KB Output is correct
27 Correct 4 ms 8796 KB Output is correct
28 Correct 7 ms 8796 KB Output is correct
29 Correct 4 ms 8792 KB Output is correct
30 Correct 18 ms 14172 KB Output is correct
31 Correct 4 ms 9052 KB Output is correct
32 Correct 4 ms 8796 KB Output is correct
33 Correct 41 ms 28780 KB Output is correct
34 Correct 5 ms 8796 KB Output is correct
35 Correct 4 ms 8796 KB Output is correct
36 Correct 81 ms 44560 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 3 ms 8540 KB Output is correct
3 Correct 3 ms 8284 KB Output is correct
4 Correct 3 ms 8796 KB Output is correct
5 Correct 18 ms 15220 KB Output is correct
6 Correct 20 ms 15564 KB Output is correct
7 Correct 21 ms 15820 KB Output is correct
8 Correct 3 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 3 ms 8796 KB Output is correct
12 Correct 22 ms 15472 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 4 ms 8796 KB Output is correct
15 Correct 22 ms 15556 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 38856 KB Output is correct
2 Correct 41 ms 33608 KB Output is correct
3 Correct 31 ms 22208 KB Output is correct
4 Correct 39 ms 31440 KB Output is correct
5 Correct 2 ms 8028 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 4 ms 8868 KB Output is correct
8 Correct 35 ms 15696 KB Output is correct

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8028 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 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 8024 KB Output is correct
7 Correct 1 ms 8028 KB Output is correct
8 Correct 1 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 8028 KB Output is correct
12 Correct 2 ms 8028 KB Output is correct
13 Correct 1 ms 8028 KB Output is correct
14 Correct 2 ms 8028 KB Output is correct
15 Correct 2 ms 8028 KB Output is correct
16 Correct 2 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 2 ms 8024 KB Output is correct
19 Correct 2 ms 8024 KB Output is correct
20 Correct 19 ms 18780 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 28 ms 20688 KB Output is correct
23 Correct 3 ms 8540 KB Output is correct
24 Correct 5 ms 8916 KB Output is correct
25 Correct 76 ms 39112 KB Output is correct
26 Correct 3 ms 8280 KB Output is correct
27 Correct 4 ms 8796 KB Output is correct
28 Correct 7 ms 8796 KB Output is correct
29 Correct 4 ms 8792 KB Output is correct
30 Correct 18 ms 14172 KB Output is correct
31 Correct 4 ms 9052 KB Output is correct
32 Correct 4 ms 8796 KB Output is correct
33 Correct 41 ms 28780 KB Output is correct
34 Correct 5 ms 8796 KB Output is correct
35 Correct 4 ms 8796 KB Output is correct
36 Correct 81 ms 44560 KB Output is correct
37 Correct 2 ms 8024 KB Output is correct
38 Correct 3 ms 8540 KB Output is correct
39 Correct 3 ms 8284 KB Output is correct
40 Correct 3 ms 8796 KB Output is correct
41 Correct 18 ms 15220 KB Output is correct
42 Correct 20 ms 15564 KB Output is correct
43 Correct 21 ms 15820 KB Output is correct
44 Correct 3 ms 8028 KB Output is correct
45 Correct 2 ms 8028 KB Output is correct
46 Correct 2 ms 8028 KB Output is correct
47 Correct 3 ms 8796 KB Output is correct
48 Correct 22 ms 15472 KB Output is correct
49 Correct 2 ms 8028 KB Output is correct
50 Correct 4 ms 8796 KB Output is correct
51 Correct 22 ms 15556 KB Output is correct
52 Correct 49 ms 38856 KB Output is correct
53 Correct 41 ms 33608 KB Output is correct
54 Correct 31 ms 22208 KB Output is correct
55 Correct 39 ms 31440 KB Output is correct
56 Correct 2 ms 8028 KB Output is correct
57 Correct 2 ms 8028 KB Output is correct
58 Correct 4 ms 8868 KB Output is correct
59 Correct 35 ms 15696 KB Output is correct
60 Correct 319 ms 215748 KB Output is correct
61 Correct 34 ms 28112 KB Output is correct
62 Correct 107 ms 73544 KB Output is correct
63 Correct 34 ms 28112 KB Output is correct
64 Correct 47 ms 15644 KB Output is correct
65 Execution timed out 2119 ms 613832 KB Time limit exceeded
66 Halted 0 ms 0 KB -