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@brainfry713 When i'm submitting code i'm removing freopen() [ sorry I did't mension that in code].
Is there any other problem that can end with a RE ?

Why RE ? Please help #include <iostream> #include<vector> #include<cstdio> using namespace std; int main() { freopen("input.txt", "r", stdin); int span; //scanf("%d",&span); while ( scanf("%d",&span) != EOF ) { vector<int> a(100001); vector<int> F(100001); int Y , year; a[0] = F[0] = 0; scanf("%d",&...