oj.uz

Submission #585584

# Submission time Handle Problem Language Result Execution time Memory
585584 2022-06-29T05:47:30 Z 조영욱(#8387) Star Trek (CEOI20_startrek) C++17
0 / 100
 0 ms 212 KB 
#include <bits/stdc++.h>
using namespace std;

int n;
long long d;
const int mod=1e9+7;

long long fastpow(long long a,long long b) {
    if (b==0) {
        return 1;
    }
    if (b%2==1) {
        return (fastpow(a,b-1)*a)%mod;
    }
    long long half=fastpow(a,b/2);
    return (half*half)%mod;
}

int main(void) {
    scanf("%d %lld",&n,&d);
    long long ret=fastpow(2,d);
    ret+=mod-1;
    printf("%lld",ret%mod);
}

Compilation message

startrek.cpp: In function 'int main()':
startrek.cpp:20:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |     scanf("%d %lld",&n,&d);
      |     ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
0 / 0.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -