giúp t bằng c++ với ạ

$\color{green}{\texttt{C}}\color{lightgreen}{\texttt{+}}\color{lightgreen}{\texttt{+}}$

#include <iostream>
#include <string>

using namespace std;

int timer[48][60];

int main() {

  int n, k1=0, k2=0, k1time=0, k2time=0; cin >> n;
  for (int i=1; i<=n; ++i) {
    int k; string t; cin >> k >> t;
    int m = stoi(t.substr(0, 2)), s = stoi(t.substr(3,2));
    timer[m][s] = k;
  }

  for (int i=0; i<=47; ++i) {
    for (int j=0; j<=59; ++j) {
      if (timer[i][j] == 1) ++ k1;
      if (timer[i][j] == 2) ++ k2;
      if (k1 > k2) ++ k1time;
      if (k2 > k1) ++ k2time;
    }
  }

  printf("%02d:%02d\n%02d:%02d", k1time/60, k1time%60, k2time/60, k2time%60);
  
}

$\\$
$\\$
\begin{array}{c|c|c}\color{#ffd710}{\texttt{\{}} \color{#8655d6}{\texttt{\{}}\ \ \color{#8cdcda}{\text{Daoanhviet96}}\ \ \color{#8655d6}{\texttt{\}}} \color{#ffd710}{\texttt{\}}}\end{array}