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Submission #163406

# Submission time Handle Problem Language Result Execution time Memory
163406 2019-11-13T06:45:02 Z dantoh000 Calvinball championship (CEOI15_teams) C++14
100 / 100
 227 ms 652 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int mod = 1000007;
int main(){
    int n; scanf("%d",&n);
    int a[n];
    int k[n];
    for (int i = 0; i < n; i++) {
        scanf("%d",&a[i]);
        if (i) k[i] = max(k[i-1],a[i]);
        else k[i] = a[i];
    }
    ll ct[2][n+1];
    ll ans = a[n-1];
    for (int i = 0; i <= n; i++){
        ct[0][i] = 1;
    }
    for (int j = 1; j < n-1; j++){
        for (int i = 1; i < n; i++){
            ct[j%2][i] = i*ct[1-j%2][i]+ct[1-j%2][i+1];
            ct[j%2][i] %= mod;
        }
        //printf("before %d: %d unique numbers, adding %d %lld\n",a[j],k[n-j-2],a[n-j-1]-1,ct[j][k[n-j-2]]);
        ans += (a[n-j-1]-1)*ct[j%2][k[n-j-2]];
        ans %= mod;

    }
    printf("%d",ans);

}

Compilation message

teams.cpp: In function 'int main()':
teams.cpp:29:20: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
     printf("%d",ans);
                    ^
teams.cpp:6:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     int n; scanf("%d",&n);
            ~~~~~^~~~~~~~~
teams.cpp:10:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&a[i]);
         ~~~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 8 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 252 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 256 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 376 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 218 ms 504 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 58 ms 504 KB Output is correct
2 Correct 77 ms 524 KB Output is correct
3 Correct 65 ms 504 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 227 ms 504 KB Output is correct
2 Correct 227 ms 652 KB Output is correct
3 Correct 227 ms 632 KB Output is correct