Submission #2739938

---

Source Code Expand

#include <stdio.h>

int* alphaCount(char* str, int start, int end) {
  int* board = new int[300];
  for(int i=0;i<300;i++) {
    board[i] = 0;
  }

  for(int i=start;i<end;i++) {
    board[str[i]]++;
  }

  return board;
}

int alphaUnion(int* board1, int* board2) {
  int res = 0;
  for(int i=0;i<300;i++) {
    if(board1[i] > 0 && board2[i] > 0) {
      res++;
    }
  }

  return res;
}

int main() {
  int N;
  scanf("%d", &N);

  char* str = new char[N + 1];
  scanf("%s", str);

  int res = 0;
  int tmp;
  int *brd1, *brd2;
  for(int i=0;i<N;i++) {
    brd1 = alphaCount(str, 0, i);
    brd2 = alphaCount(str, i, N);
    tmp = alphaUnion(brd1, brd2);
    if(tmp > res) {
      res = tmp;
    }
    delete[] brd1;
    delete[] brd2;
  }

  printf("%d\n", res);

  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:29:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &N);
                  ^
./Main.cpp:32:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", str);
                   ^

Judge Result