10000000 10000000

#include <cstring>
#include <cstdio>

const int inSZ = 1 << 17;

unsigned char inBuf[inSZ], *in1, *in2;
inline __attribute((always_inline))
unsigned read() {
    unsigned res = 0;
    unsigned char c;
    while((c = *in1++) < 48);
    while(res = res * 10 + c - 48, (c = *in1++) >= 48);
    return res;
}
inline __attribute((always_inline))
void refresh() {
    if(__builtin_expect(in1 > inBuf + inSZ - 128, 0)) {
        auto len = in2 - in1;
        memcpy(inBuf, in1, len);
        in1 = inBuf, in2 = inBuf + len;
        in2 += fread(in2, 1, inSZ - len, stdin);
        if(in2 != inBuf + inSZ) *in2 = 0;
    }
}
int main() {
    in1 = inBuf;
    in2 = in1 + fread(in1, 1, inSZ, stdin);
    read();
    unsigned long sum = 0;
    for(int i = 1000000; i; i--) {
        #pragma GCC unroll 10
        for(int j = 10; j; j--) sum += read();
        refresh();
    }
    printf("%lu\n", sum);
}

#include <cstring>
#include <cstdio>

const int outSZ = 2e6;

unsigned char outBuf[outSZ];

int main() {
    memset(outBuf, '9', outSZ);
    for(int i = 9; i < outSZ; i += 10) outBuf[i] = ' ';
    for(int i = 5; i; i--) fwrite(outBuf, 1, outSZ, stdout);
}