Submission #244452

#	Time	Username	Problem	Language	Result	Execution time	Memory
244452		cheeheng	Calvinball championship (CEOI15_teams)	C++14	70 / 100	741 ms	8440 KiB

teams

#include <bits/stdc++.h>
using namespace std;

const int MOD = 1000007;

int A[1005];
int memo[1005][1005][2];

int n;

int dp(int i, int cur_max, int same_so_far){
    if(i == n){
        return 1;
    }else if(memo[i][cur_max][same_so_far] != -1){
        return memo[i][cur_max][same_so_far];
    }else{
        long long ans = 0;

        if(same_so_far){
            for(int j = 1; j <= A[i]; j ++){
                ans += dp(i+1, max(cur_max, j), j == A[i]);
            }
        }else{
            for(int j = 1; j <= cur_max+1; j ++){
                ans += dp(i+1, max(cur_max, j), 0);
            }
        }

        return memo[i][cur_max][same_so_far] = ans%MOD;
    }
}

int main(){
    scanf("%d", &n);

    for(int i = 0; i < n; i ++){
        scanf("%d", &A[i]);
    }

    memset(memo, -1, sizeof(memo));

    printf("%d", dp(0, 0, 1));
    return 0;
}

Compilation message (stderr)

teams.cpp: In function 'int main()':
teams.cpp:34:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
teams.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &A[i]);
         ~~~~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10