oj.uz

Submission #994709

# Submission time Handle Problem Language Result Execution time Memory
994709 2024-06-08T04:14:45 Z salmon Trains (BOI24_trains) C++14
0 / 100
 46 ms 28848 KB 
#include <bits/stdc++.h>
using namespace std;

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

int main(){
	
	scanf(" %d",&N);
	
	for(int i = 0; i < N; i++){
		scanf(" %d",&d);
		scanf(" %d",&x);
		v.push_back(d);
		iv.push_back({d,x});
		num[i] = 0;
	}
	
	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 = 1;
	
	for(int i = 1; i < N; i++){
		for(int j : sat[i]){
			num[i] += num[i - j];
		}
		num[i] %= mod;
		sum = (sum + num[i]) % mod;
	}
	
	printf("%lld",sum);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf(" %d",&N);
      |  ~~~~~^~~~~~~~~~
Main.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   scanf(" %d",&d);
      |   ~~~~~^~~~~~~~~~
Main.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf(" %d",&x);
      |   ~~~~~^~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Incorrect 1 ms 5608 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Incorrect 1 ms 5608 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 5724 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Incorrect 46 ms 28848 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Incorrect 1 ms 5608 KB Output isn't correct
3 Halted 0 ms 0 KB -