Submission #1540592

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Source Code Expand

#include <iostream>
#include <string>
#include <cstring>
#define maxn 200009
using namespace std;
char s[maxn];
int cnt[maxn][26];
int main(){
	scanf("%s", s + 1);
	int n = strlen(s + 1);
	for(int i = n; i >= 1; i--){
		for(int j = 0; j < 26; j++)
			cnt[i][j] = cnt[i + 1][j];
		cnt[i][s[i] - 'a']++;
	}
	long long ans = 0;
	for(int i = 1; i <= n; i++){
		long long sum = 0;
		for(int j = 0; j < 26; j++){
			if(s[i] - 'a' != j)
				sum += cnt[i][j];
		}
		ans += sum;
	}
	cout << ans + 1 << endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", s + 1);
                    ^

Judge Result