oj.uz

Submission #90749

# Submission time Handle Problem Language Result Execution time Memory
90749 2018-12-24T09:03:02 Z Vinhspm Calvinball championship (CEOI15_teams) C++14
70 / 100
 96 ms 66560 KB 
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define FOR(a, b, c) for(int a = b; a <= c; ++a)
#define pb push_back

const int N = 1e5 + 10;
const int mod = 1e6 + 7;

int n, num;
int a[N], cnt[N];
vector<int> f[N];

void add(int &x, int y) { x = (x + y) % mod; }
signed main()
{
    scanf("%d", &n);
    FOR(i, 1, n)    scanf("%d", &a[i]);
    FOR(i, 0, n + 1) f[i].assign(i + 5, 0);
    FOR(i, 0, n) f[n + 1][i] = 1;
    for(int i = n; i >= 1; --i) FOR(j, 0, i) {
        add(f[i][j], f[i + 1][j] * j);
        add(f[i][j], f[i + 1][j + 1]);
    }

    int sum = 1;
    FOR(i, 1, n)    {
        for(int j = 1; j < a[i]; ++j)   {
            cnt[j] ++; if(cnt[j] == 1) num ++;
            add(sum, f[i + 1][num]);
            cnt[j] --; if(cnt[j] == 0) num --;
        }
        cnt[ a[i] ] ++; if(cnt[ a[i] ] == 1) num ++;
    }
    printf("%d", sum);
}

Compilation message

teams.cpp: In function 'int main()':
teams.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
teams.cpp:20:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     FOR(i, 1, n)    scanf("%d", &a[i]);
                     ~~~~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2680 KB Output is correct
2 Correct 3 ms 2864 KB Output is correct
3 Correct 3 ms 2864 KB Output is correct
4 Correct 3 ms 2864 KB Output is correct
5 Correct 3 ms 2864 KB Output is correct
6 Correct 3 ms 2864 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2864 KB Output is correct
2 Correct 4 ms 2864 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2876 KB Output is correct
2 Correct 4 ms 2876 KB Output is correct
3 Correct 4 ms 2876 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2984 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2984 KB Output is correct
2 Correct 4 ms 2984 KB Output is correct
3 Correct 4 ms 3084 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3488 KB Output is correct
2 Correct 5 ms 3492 KB Output is correct
3 Correct 5 ms 3496 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5036 KB Output is correct
2 Correct 7 ms 5036 KB Output is correct
3 Correct 10 ms 5044 KB Output is correct

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 66 ms 66560 KB Execution killed with signal 9 (could be triggered by violating memory limits)

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 96 ms 66560 KB Memory limit exceeded: We have a known bug that the memory usage is measured incorrectly (possibly because of Meltdown/Spectre patch), so your solution may be correct. Please submit again. Sorry for the inconvenience.
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 61 ms 66560 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -