Submission #406887

#	Time	Username	Problem	Language	Result	Execution time	Memory
406887		LptN21	Mobitel (COCI14_mobitel)	C++17	50 / 50	1 ms	204 KiB

mobitel

#include <bits/stdc++.h>
using namespace std;
#define fastIO ios_base::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL);
#define FF first
#define SS second
#define pb push_back
#define sz(x) (int)x.size()
#define oo 1e9
#define eps 1e-9
#define PI acos(-1.0)
#define lb lower_bound
#define ub upper_bound
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> ii;
const int N = 250000+7, M=1000+7;
const int MOD = 1e9+7;

int n, m, k, t;

vector<char> ch[10];
int idx[10];

ii qry(char c) {
    for(int i=2;i<10;i++)
        for(int j=0;j<sz(ch[i]);j++)
            if(ch[i][j]==c) return ii(i, j+1);
}

signed main() {
    //freopen("test.inp", "r", stdin);
    //freopen("test.out", "w", stdout);
    //fastIO;
    for(int cnt, j=0, i=2;i<10;i++) {
        if(i==7||i==9) cnt=4;else cnt=3;
        for(int k=0;k<cnt;j++, k++) ch[i].pb(j+'a');
    }
    for(int j, i=1;i<10;idx[j]=i++) scanf("%d", &j);
    char s[100];scanf("%s", &s);
    for(int i=0;i<strlen(s);i++) {
        ii p=qry(s[i]);
        if(i&&p.FF==qry(s[i-1]).FF) printf("#");
        for(int k=0;k<p.SS;k++) printf("%d", idx[p.FF]);
    }
    return 0;
}
/* stuff you should look for
    - int overflow, array bounds
    - special cases (n=1?)
    - do smth instead of do nothing and stay organized
    - WRITE STUFF DOWN
    - DONT JUST STICK ON ONE APPROACH
*/

Compilation message (stderr)

mobitel.cpp: In function 'int main()':
mobitel.cpp:39:25: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[100]' [-Wformat=]
   39 |     char s[100];scanf("%s", &s);
      |                        ~^   ~~
      |                         |   |
      |                         |   char (*)[100]
      |                         char*
mobitel.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int i=0;i<strlen(s);i++) {
      |                 ~^~~~~~~~~~
mobitel.cpp: In function 'ii qry(char)':
mobitel.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type]
   28 | }
      | ^
mobitel.cpp: In function 'int main()':
mobitel.cpp:38:42: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     for(int j, i=1;i<10;idx[j]=i++) scanf("%d", &j);
      |                                     ~~~~~^~~~~~~~~~
mobitel.cpp:39:22: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     char s[100];scanf("%s", &s);
      |                 ~~~~~^~~~~~~~~~

• Subtask 1: 50 / 50