Submission #1777202

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for(int i=0; i<(n); ++i)
#define reps(i,f,n) for(int i=(f); i<=(n); ++i)
#define outl(x) cout << x << '\n';

#define INF (1 << 29)

#define FAST cin.tie(0), ios::sync_with_stdio(false)
inline int chmax(int &a, int b){return b>a ? a=b,1 : 0;}
inline int chmin(int &a, int b){return b<a ? a=b,1 : 0;}
//________

main(){
  char s[100010];
  scanf("%s", s);
  reps(i,'a','z'){
    if(strchr(s,i) == NULL){
      printf("%c\n", i);
      return 0;
    }
  }
  puts("None");
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", s);
                 ^

Judge Result