提出 #65473755

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ソースコード 拡げる

#include<bits/stdc++.h>
#define fi first
#define se second
#define mkp(x,y) make_pair(x,y)
#define lsb(x) (x&(-x))
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const ll MOD=1e9;
ll n,c[2009],a[2009],fl[2009];
ll ans,vst[2009];
ll bfs(ll st,ll ed){
	ll last=ed+1,now=ed,res=0;
	while(now>st){
		ll mn=1e9;
		for(ll i=now;i<last;i++) mn=min(mn,i-c[i]);
		last=now;
		now=mn;
		res++;
	}
	return res;
}
int main(){
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	scanf("%lld",&n);
	n--;
	for(ll i=1;i<=n;i++) scanf("%lld",&c[i]);
	ll last=0;
	for(ll i=1;i<=n;i++){
		scanf("%lld",&a[i]);
		fl[i]=last;
		if(a[i]) last=i;
	}
	ll cnt=0;
	for(ll i=n;i>=1;i--)if(a[i]){
		ll l=fl[i],r=i;
		cnt+=bfs(fl[i],i);
		i=fl[i]+1;
	}
	printf("%lld",cnt);
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:37:20: warning: unused variable ‘l’ [-Wunused-variable]
   37 |                 ll l=fl[i],r=i;
      |                    ^
Main.cpp:37:28: warning: unused variable ‘r’ [-Wunused-variable]
   37 |                 ll l=fl[i],r=i;
      |                            ^
Main.cpp:26:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   26 |         scanf("%lld",&n);
      |         ~~~~~^~~~~~~~~~~
Main.cpp:28:35: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   28 |         for(ll i=1;i<=n;i++) scanf("%lld",&c[i]);
      |                              ~~~~~^~~~~~~~~~~~~~
Main.cpp:31:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   31 |                 scanf("%lld",&a[i]);
      |                 ~~~~~^~~~~~~~~~~~~~

ジャッジ結果