Pakkaus

input/code.cpp: In function 'int main()':
input/code.cpp:41:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.length(); i++) {
                                  ^

#include <bits/stdc++.h>

#define uint unsigned int
#define ull unsigned long long
#define INF 1000000001
#define LINF 1000000000000000001
#define ll long long
#define ld long double
#define M 1000000007
#define E 0.0000001
#define N (1<<17)
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pdd pair<double, double>
#define pld pair<long double, long double>
#define cll complex<long long>
#define cld complex<long double>
#define X real()
#define Y imag()
#define C 'a'
#define F first
#define S second
#define PI 3.1415926535897932384626433

using namespace std;

int parse (string s) {
    int x = 0;
    for (char c : s) {
        x = 10 * x + (c - '0');
    }
    return x;
}

int main () {
    string s;
    cin>>s;
    string n;
    string m;
    bool p = true;
    for (int i = 0; i < s.length(); i++) {
        if (s[i] >= '0' && s[i] <= '9') {
            if (!p) {
                int x = parse(n);
                for (int j = 0; j < x; j++) cout<<m;
                m = n = "";
            }
            p = true;
            n += s[i];
        } else {
            p = false;
            m += s[i];
        }
    }
    int x = parse(n);
    for (int j = 0; j < x; j++) cout<<m;
    m = n = "";
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED