提出 #38857964

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ソースコード 拡げる

#include<vector>
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
const int mod=998244353,maxn=500005;
void UP(int&x,int y){x+=y;x-=x>=mod?mod:0;}
int dp[maxn],L[maxn],R[maxn];
int main(){
	int n;
	scanf("%d",&n);
	for(int i=1;i<=n;++i)
		scanf("%d%d",&L[i],&R[i]);
	dp[0]=1;
	for(int i=1,j=1,k=1;i<=n;++i){
		while(R[j]<L[i])++j;
		while(k<n&&L[k+1]<R[i]){
			UP(dp[k],dp[k-1]);
			UP(dp[k],dp[k-1]);
			++k;
		}
		UP(dp[k],mod-dp[j-1]);
	}
	UP(dp[n],dp[n-1]);UP(dp[n],dp[n-1]);
	printf("%d\n",dp[n]);
	return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   11 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
./Main.cpp:13:8: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   13 |   scanf("%d%d",&L[i],&R[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~

ジャッジ結果