Submission #1903708

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Source Code Expand

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<math.h>
#include<stack>
#include<queue>
#include<vector>
#include<algorithm>
#include<string>
#include<iostream>
using namespace std;
int min(int a,int b){if(a<b)return a;else return b;};

int main() {
    int n;cin>>n;
    int t[n],a[n],h1[n],h2[n];
    for(int i=0;i<=n-1;i++)h1[i]=h2[i]=-1;
    for(int i=0;i<=n-1;i++)scanf("%d",&t[i]);
    for(int i=0;i<=n-1;i++)scanf("%d",&a[i]);
    for(int i=0;i<=n-1;i++)if(i==0||t[i-1]<t[i])h1[i]=t[i];
    for(int i=n-1;i>=0;i--)if(i==n-1||a[i]>a[i+1])h2[i]=a[i];

    int flag=0;
    int an[n];
    for(int i=0;i<=n-1;i++)an[i]=1;
    for(int i=0;i<=n-1;i++){
        if(h1[i]!=-1&&h2[i]!=-1){
            if(h1[i]!=h2[i])flag=1;
        }else if(h1[i]!=-1){
            if(h1[i]>a[i])flag=1;
        }else if(h2[i]!=-1){
            if(h2[i]>t[i])flag=1;
        }else{
            an[i]=min(t[i],a[i]);
        }
    }
    
    if(flag==1)printf("0");
    else {
        long long int ans=1;
        for(int i=0;i<=n-1;i++){
            ans=(ans*an[i])%1000000007;
        }
        printf("%lld",ans);
    }
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:19:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<=n-1;i++)scanf("%d",&t[i]);
                                             ^
./Main.cpp:20:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     for(int i=0;i<=n-1;i++)scanf("%d",&a[i]);
                                             ^

Judge Result