Submission #52141

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
52141	2018-06-24 07:04:21	ainta	스탬프 수집 (JOI16_ho_t2)	C++17	100 / 100	5 ms	3488 KiB

2016_ho_t2

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#include<cstdio>
#include<algorithm>
using namespace std;
int C[101000][3];
int n;
char p[101000];
long long s = 0, res, s2 = 0, M;
int main() {
  int i, j;
  scanf("%d", &n);
  scanf("%s", p + 1);
  for (i = 1; i <= n; i++) {
    for (j = 0; j < 3; j++)C[i][j] = C[i - 1][j];
    if (p[i] == 'J')C[i][0]++;
    if (p[i] == 'O') {
      s += C[i][0];
      C[i][1]++;
    }
    if (p[i] == 'I') {
      C[i][2]++;
      res += s;
    }
  }
  int c = 0;
  for (i = n; i >= 1; i--) {
    if (p[i] == 'I')c++;
    if (p[i] == 'O')s2 += c;
  }
  M = max(s2, s);
  for (i = 0; i <= n; i++) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

2016_ho_t2.cpp: In function 'int main()':
2016_ho_t2.cpp:10:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
2016_ho_t2.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", p + 1);
  ~~~~~^~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20
• Subtask 3: 50 / 50