Submission #154784

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Source Code Expand

#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
typedef pair<int,int> P;
int N;
int a[1000010];
int main(){
	scanf("%d",&N);
	a[1] = 0;
	a[2] = 0;
	a[3] = 1;
	for(int i=4;i<=N;i++){
		a[i] = a[i-1] + a[i-2] + a[i-3];
	}
	printf("%d\n", a[N]);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result