Submission #23145

#	Time	Username	Problem	Language	Result	Execution time	Memory
23145		ainta	Unifying Values (KRIII5_UV)	C++14	7 / 7	99 ms	1232 KiB

UV

/*#include<cstdio>
#include<algorithm>
using namespace std;
int P[110], Mod = 1000000007, n, w[60], Comb[5110][110], C[110][110];
int D[51][5010], sum;
int main(){
    int i, j, k;
    for(i=0;i<=5101;i++){
        Comb[i][0]=1;
        for(j=1;j<=100&&j<=i;j++){
            Comb[i][j]=(Comb[i-1][j-1]+Comb[i-1][j])%Mod;
        }
    }
    for(i=1;i<=100;i++){
        int s = 0;
        for(j=1;j<i;j++){
            s = (s + 1ll * P[j]*(i-j))%Mod;
        }
        P[i] = (i - s + Mod)%Mod;
    }
    C[0][0] = 1;
    for(i=0;i<100;i++){
        for(j=0;j<=100;j++){
            for(k=0;k+j<=100;k++){
                C[j+k][i+1] = (C[j+k][i+1] + 1ll * C[j][i] * P[k])%Mod;
            }
        }
    }
    scanf("%d",&n);
    for(i=1;i<=n;i++)scanf("%d",&w[i]);
    D[0][0] = 1;
    for(i=1;i<=n;i++){
        for(j=0;j<=sum;j++){
            for(k=1;k<=w[i];k++){
                D[i][j+k] = (D[i][j+k] + 1ll * Comb[j+k][k] * C[w[i]][k] % Mod * D[i-1][j])%Mod;
            }
        }
        sum += w[i];
    }
    int ss = 0;
    int res = 0;
    for(i=0;i<=sum;i++)res = (res + D[n][i])%Mod;
    printf("%d\n",res);
}*/
#include<cstdio>
#include<algorithm>
using namespace std;
int n, D[10100], Mod = 1000000007, Res;
long long S[10100];
void Do(int K){
    int i;
    long long t = S[n]/K, tp;
    for(i=0;i<=K;i++)D[i] = 0;
    D[0] = 1;
    for(i=1;i<=n;i++){
        tp = S[i]/t;
        if(tp*t!=S[i])continue;
        if(tp<=0||tp>K)continue;
        D[tp] = (D[tp]+D[tp-1])%Mod;
    }
    Res = (Res + D[K-1])%Mod;
}
int main(){
    int i;
    scanf("%d",&n);
    for(i=1;i<=n;i++){
        scanf("%lld",&S[i]);
        S[i]+=S[i-1];
    }
    if(S[n]==0){
        Res = 1;
        for(i=1;i<n;i++){
            if(S[i]==0)Res=Res*2%Mod;
        }
        Res=(Res-1)%Mod;
        printf("%d\n",Res);
        return 0;
    }
    for(i=2;i<=n;i++){
        if(S[n]%i==0){
            Do(i);
        }
    }
    printf("%d\n",Res);
}

Compilation message (stderr)

UV.cpp: In function 'int main()':
UV.cpp:65:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
                   ^
UV.cpp:67:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&S[i]);
                            ^

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5