提出 #75701364

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ソースコード 拡げる

#include<bits/stdc++.h>
#define ll long long
#define rep(i,l,r) for(int i=(l);i<=(r);++i)
#define per(i,r,l) for(int i=(r);i>=(l);--i)

using namespace std;
const int N=5e5+10,P=998244353;
int T,n,p[N],s[N];

void solve(){
	cin>>n;rep(i,1,n)cin>>p[i];
	bool o=true;rep(i,1,n-1)o&=(p[i]<=p[i+1]);
	if(o){ll ans=((1ll*n*(n-1))>>1)%P;ans=(ans+1)%P;cout<<ans<<"\n";return;}
	rep(i,1,n)s[i]=0;s[n]=p[n];per(i,n-1,1)s[i]=min(p[i],s[i+1]);
	int id=-1;rep(i,1,n-1)if(p[i]>s[i+1]){id=i;break;}
	ll ans=0;if(id>1){ans=(((id-1)*((2ll*n-id))>>1)%P);}
	cout<<ans<<"\n";
	return;
}

signed main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>T;while(T--)solve();
	return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function 'void solve()':
./Main.cpp:3:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    3 | #define rep(i,l,r) for(int i=(l);i<=(r);++i)
      |                    ^~~
./Main.cpp:14:9: note: in expansion of macro 'rep'
   14 |         rep(i,1,n)s[i]=0;s[n]=p[n];per(i,n-1,1)s[i]=min(p[i],s[i+1]);
      |         ^~~
./Main.cpp:14:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   14 |         rep(i,1,n)s[i]=0;s[n]=p[n];per(i,n-1,1)s[i]=min(p[i],s[i+1]);
      |                          ^

ジャッジ結果