Submission #1118554

#	Time	Username	Problem	Language	Result	Execution time	Memory
1118554		EfeBabagil	Trains (BOI24_trains)	C++14	0 / 100	23 ms	2140 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
int mod= 1e9+7;
int32_t main()
{
    int n;
    
    cin>>n;
    vector<pair<int,int>> city(n);
    vector<int> ans(n);
    for(int i=0;i<n;i++)
    {
        int a,b;
        cin>>a>>b;
        city[i]={a,b};
    }
    ans[0]=1;
    for(int i=0;i<n;i++){
        if(i+1<n)
        ans[i+1]=(ans[i+1]+ans[i])%mod;
        if(i+city[i].second+1<n){
        ans[i+city[i].second+1]=(ans[i+city[i].second+1]-ans[i])%mod;
        
        }
    }
    int sum=0;
    for(int i=0;i<n;i++){
        sum+=ans[i]%mod;
    }
    //0 2 1
    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 13
• Subtask 3: 0 / 16
• Subtask 4: 0 / 34
• Subtask 5: 0 / 29