Submission #1167429

#	Time	Username	Problem	Language	Result	Execution time	Memory
1167429		MahmytM	Gap (APIO16_gap)	C++20	Compilation error	0 ms	0 KiB

gap

#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define mxn 502
#define pb push_back
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
using namespace std;
int n,a[mxn],b[mxn],dp[mxn][2],mod=1e9+7;
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
//	freopen("input.txt","r",stdin);
//	freopen("output.txt","w",stdout);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i]>>b[i];
	}
	dp[1][0]=1,dp[1][1]=1;
	for(int i=2;i<=n;i++){
		for(int j=1;j<i;j++){
			dp[i][0]=(dp[i][0]+dp[j][1]+dp[j][0])%mod;
			dp[i][1]=(dp[i][1]+dp[j][0])%mod;
			if(a[i]>a[j]) dp[i][1]=(dp[i][1]+dp[j][0])%mod;
		}
	}
	cout<<(dp[n][1]+dp[n][0])%mod;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccivQimd.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccfmUYqK.o:gap.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccivQimd.o: in function `main':
grader.cpp:(.text.startup+0x1c2): undefined reference to `findGap(int, int)'
collect2: error: ld returned 1 exit status