Submission #379491

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
379491	2021-03-18 10:33:49	qwerty234	Monochrome Points (JOI20_monochrome)	C++14	100 / 100	67 ms	34156 KiB

monochrome

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#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define fi first
#define se second
#define int long long
using namespace std;
const int MAXN = 1e6 + 10;
int n, blue[MAXN], red[MAXN], l1_blue[MAXN], r1_blue[MAXN], l2_blue[MAXN], r2_blue[MAXN];
int l1_red[MAXN], r1_red[MAXN], l2_red[MAXN], r2_red[MAXN];
int closest_left_red[MAXN], closest_left_blue[MAXN];
ll ans[MAXN];
char a[MAXN];
void precalc() {
  for (int i = 1; i <= n; i++) {
    blue[i + n] = blue[i] + 2 * n;
    red[i + n] = red[i] + 2 * n;
  }
  int lastred = 0, lastblue = 0;
  for (int i = 1; i <= 4 * n; i++) {
    int cur = i; if (i > 2 * n) cur -= 2 * n;
    if (a[cur] == 'B') lastblue++; else lastred++;
    closest_left_red[i] = lastred;
    closest_left_blue[i] = lastblue;
  }
  for (int i = 1; i <= n; i++) {
 
 
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Compilation message (stderr)

monochrome.cpp:58:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main() {
      |      ^

• Subtask 1: 4 / 4
• Subtask 2: 21 / 21
• Subtask 3: 10 / 10
• Subtask 4: 65 / 65