Submission #787259

#	Time	Username	Problem	Language	Result	Execution time	Memory
787259		Username4132	Mensza (COI22_mensza)	C++17	0 / 100	2174 ms	162104 KiB

Main

#include<iostream>
using namespace std;
#define forn(i, n) for(int i=0; i<(int)n; ++i)

char s[10];

inline int encode(int a, int b, int c, int d){
    return (a<<8) + (b<<2) + (c<<1) + d;
}

void solve(){
    scanf("%s", s);
    if(s[0]=='c'){
        int m, a; scanf("%d", &m);
        forn(i, m) scanf("%d", &a);
        printf("%c\n", (a==1? 'B' : 'A'));
        fflush(stdout);
    }
    else{
        int num; scanf("%d", &num);
        int sz = 8*sizeof(int) - __builtin_clz(num);
        string ret(to_string(sz));
        forn(i, sz){
            int dig = !(num & (1<<i));
            ret.append(" ");
            ret.append(to_string(encode(num&((1<<24) - (1<<(i+1))), i, dig^(s[0]=='a'), dig|(s[0]=='a'))));
        }
        printf("%s\n", ret.c_str());
        fflush(stdout);
    }
}

int main(){
    int a, t; scanf("%d %d", &a, &t);
    while(t--) solve();
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%s", s);
      |     ~~~~~^~~~~~~~~
Main.cpp:14:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         int m, a; scanf("%d", &m);
      |                   ~~~~~^~~~~~~~~~
Main.cpp:15:25: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         forn(i, m) scanf("%d", &a);
      |                    ~~~~~^~~~~~~~~~
Main.cpp:20:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         int num; scanf("%d", &num);
      |                  ~~~~~^~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:34:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     int a, t; scanf("%d %d", &a, &t);
      |               ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 66